diff --git a/crates/ui-egui/src/brush_panel_tests.rs b/crates/ui-egui/src/brush_panel_tests.rs
index b6eb2581..ecfcdeb3 100644
--- a/crates/ui-egui/src/brush_panel_tests.rs
+++ b/crates/ui-egui/src/brush_panel_tests.rs
@@ -286,6 +286,30 @@ fn options_bar_edits_are_one_set_brush_per_gesture() {
     assert_eq!(s.tools.brush, h.state().session.tools.brush);
 }
 
+#[test]
+fn mixer_brush_options_update_the_persisted_mixer_settings() {
+    use egui_kittest::kittest::Queryable;
+    let mut h = options_bar_harness(crate::state::Tool::MixerBrush);
+    for label in ["Wet", "Load", "Mix", "Flow", "Sample All Layers"] {
+        assert!(h.get_by_label(label).rect().is_positive(), "missing Mixer Brush option {label}");
+    }
+
+    let initial = h.state().session.journal.len();
+    let at = h.get_by_label("Sample All Layers").rect().center();
+    h.hover_at(at);
+    h.run();
+    h.drag_at(at);
+    h.run();
+    h.drop_at(at);
+    h.run_steps(2);
+
+    assert!(h.state().session.tools.brush.mixer.sample_all_layers);
+    assert_eq!(h.state().session.journal.len(), initial + 1);
+    let (id, params) = h.state().session.journal.last().unwrap();
+    assert_eq!(id, "tools.setBrush");
+    assert_eq!(params["brush"]["mixer"]["sampleAllLayers"], true);
+}
+
 #[test]
 fn drop_targets_and_actions_reorder_presets() {
     use crate::brushes_tab::{Action, apply, drop_target, group_key};
diff --git a/crates/ui-egui/src/canvas.rs b/crates/ui-egui/src/canvas.rs
index 5ef369a0..2f7c3556 100644
--- a/crates/ui-egui/src/canvas.rs
+++ b/crates/ui-egui/src/canvas.rs
@@ -268,6 +268,7 @@ pub(crate) fn freehand_tool(tool: Tool) -> bool {
         tool,
         Tool::Brush
             | Tool::Pencil
+            | Tool::MixerBrush
             | Tool::Eraser
             | Tool::BackgroundEraser
             | Tool::HistoryBrush
@@ -2516,9 +2517,18 @@ mod tests {
 
     #[test]
     fn freehand_tools_are_the_ones_that_follow_a_path() {
-        for t in
-            [Tool::Brush, Tool::Pencil, Tool::Eraser, Tool::BackgroundEraser, Tool::CloneStamp, Tool::Smudge, Tool::Dodge, Tool::Lasso, Tool::QuickSelection]
-        {
+        for t in [
+            Tool::Brush,
+            Tool::Pencil,
+            Tool::MixerBrush,
+            Tool::Eraser,
+            Tool::BackgroundEraser,
+            Tool::CloneStamp,
+            Tool::Smudge,
+            Tool::Dodge,
+            Tool::Lasso,
+            Tool::QuickSelection,
+        ] {
             assert!(freehand_tool(t), "{t:?} paints or retouches along a path");
         }
         for t in [Tool::Move, Tool::Eyedropper, Tool::Gradient, Tool::Crop, Tool::RectMarquee, Tool::Type, Tool::Hand] {
diff --git a/crates/ui-egui/src/i18n/cs.tsv b/crates/ui-egui/src/i18n/cs.tsv
index 5dc85213..9f4ee8a9 100644
--- a/crates/ui-egui/src/i18n/cs.tsv
+++ b/crates/ui-egui/src/i18n/cs.tsv
@@ -1951,6 +1951,7 @@
 	Brush Projection	Projekce štětce
 	Apply the pen's tilt and rotation to the tip shape	Použít náklon a natočení pera na tvar hrotu
 	Mixer Brush	Míchací štětec
+	Mixer Brush Tool	Nástroj Míchací štětec
 	Wet	Vlhkost
 	Mix	Míchání
 	Wetness Jitter	Kolísání vlhkosti
diff --git a/crates/ui-egui/src/i18n/es.tsv b/crates/ui-egui/src/i18n/es.tsv
index 6e195375..63ebbd95 100644
--- a/crates/ui-egui/src/i18n/es.tsv
+++ b/crates/ui-egui/src/i18n/es.tsv
@@ -1937,6 +1937,7 @@
 	Brush Projection	Proyección del pincel
 	Apply the pen's tilt and rotation to the tip shape	Aplicar la inclinación y la rotación del lápiz a la forma de la punta
 	Mixer Brush	Pincel mezclador
+	Mixer Brush Tool	Herramienta Pincel mezclador
 	Wet	Húmedo
 	Mix	Mezcla
 	Wetness Jitter	Variación de humedad
diff --git a/crates/ui-egui/src/i18n/ja.tsv b/crates/ui-egui/src/i18n/ja.tsv
index d912a749..9ce3867f 100644
--- a/crates/ui-egui/src/i18n/ja.tsv
+++ b/crates/ui-egui/src/i18n/ja.tsv
@@ -1942,6 +1942,7 @@
 	Brush Projection	ブラシの投影
 	Apply the pen's tilt and rotation to the tip shape	ペンの傾きと回転を先端のシェイプに適用します
 	Mixer Brush	混合ブラシ
+	Mixer Brush Tool	混合ブラシツール
 	Wet	ウェット
 	Mix	混合
 	Wetness Jitter	ウェットのジッター
diff --git a/crates/ui-egui/src/i18n/mod.rs b/crates/ui-egui/src/i18n/mod.rs
index 5b7c49db..2f0dd4dc 100644
--- a/crates/ui-egui/src/i18n/mod.rs
+++ b/crates/ui-egui/src/i18n/mod.rs
@@ -538,4 +538,19 @@ mod tests {
             }
         }
     }
+
+    #[test]
+    fn mixer_brush_ui_strings_have_translations_in_every_registered_language() {
+        const STRINGS: &[&str] = &["Mixer Brush", "Mixer Brush Tool", "Wet", "Load", "Mix", "Flow", "Sample All Layers"];
+        for lang in Lang::all() {
+            for source in STRINGS {
+                let translated = tr(lang, source);
+                if lang == Lang::EN {
+                    assert_eq!(translated, *source, "English source string {source}");
+                } else {
+                    assert_ne!(translated, *source, "{} is missing {source:?}", lang.code());
+                }
+            }
+        }
+    }
 }
diff --git a/crates/ui-egui/src/i18n/ru.tsv b/crates/ui-egui/src/i18n/ru.tsv
index a5919d87..8e622618 100644
--- a/crates/ui-egui/src/i18n/ru.tsv
+++ b/crates/ui-egui/src/i18n/ru.tsv
@@ -468,6 +468,7 @@
 	Quick Selection	Быстрое выделение
 	Magnetic Lasso	Магнитное лассо
 	Mixer Brush	Смешивающая кисть
+	Mixer Brush Tool	Инструмент «Смешивающая кисть»
 	History Brush	Кисть истории
 	Art History Brush	Кисть истории искусств
 	Pattern Stamp	Узорный штамп
diff --git a/crates/ui-egui/src/i18n/zh-hans.tsv b/crates/ui-egui/src/i18n/zh-hans.tsv
index 2b7c37c4..d5f0672a 100644
--- a/crates/ui-egui/src/i18n/zh-hans.tsv
+++ b/crates/ui-egui/src/i18n/zh-hans.tsv
@@ -1135,6 +1135,9 @@
 	Midtones	中间调
 	Midtones from:	中间调下限：
 	Midtones to:	中间调上限：
+	Mix	混合
+	Mixer Brush	混合笔刷
+	Mixer Brush Tool	混合画笔工具
 	Minimum Depth	最小深度
 	Minimum Diameter	最小直径
 	Minimum Roundness	最小圆度
@@ -1665,6 +1668,7 @@
 	Web Minimum	Web 最小尺寸
 	Web Most Common	Web 常用尺寸
 	WebP (lossless)	WebP（无损）
+	Wet	湿度
 	Wet Edges	湿边
 	Yellows	黄色
 	Zoom Tool	缩放工具
diff --git a/crates/ui-egui/src/i18n/zh-hant.tsv b/crates/ui-egui/src/i18n/zh-hant.tsv
index 29d8a9df..3bac4fb8 100644
--- a/crates/ui-egui/src/i18n/zh-hant.tsv
+++ b/crates/ui-egui/src/i18n/zh-hant.tsv
@@ -1933,6 +1933,7 @@
 	Brush Projection	筆刷投影
 	Apply the pen's tilt and rotation to the tip shape	將筆的傾斜和旋轉套用至筆尖形狀
 	Mixer Brush	混合器筆刷
+	Mixer Brush Tool	混合器筆刷工具
 	Wet	濕度
 	Mix	混合
 	Wetness Jitter	濕度快速變換
diff --git a/crates/ui-egui/src/icons.rs b/crates/ui-egui/src/icons.rs
index ecd902e3..9fd02fa8 100644
--- a/crates/ui-egui/src/icons.rs
+++ b/crates/ui-egui/src/icons.rs
@@ -64,6 +64,7 @@ pub fn tool_icon(t: Tool) -> &'static str {
         Tool::EllipseMarquee => "circle-dashed",
         Tool::Brush => "brush",
         Tool::Pencil => "pencil",
+        Tool::MixerBrush => "palette",
         Tool::Eraser => "eraser",
         Tool::BackgroundEraser => "eraser-background",
         Tool::MagicEraser => "eraser-magic",
diff --git a/crates/ui-egui/src/panels.rs b/crates/ui-egui/src/panels.rs
index 754d4a4a..4d3bb233 100644
--- a/crates/ui-egui/src/panels.rs
+++ b/crates/ui-egui/src/panels.rs
@@ -25,7 +25,7 @@ const TOOL_SECTIONS: &[&[&[Tool]]] = &[
     ],
     &[
         &[Tool::SpotHealing, Tool::Healing],
-        &[Tool::Brush, Tool::Pencil],
+        &[Tool::Brush, Tool::Pencil, Tool::MixerBrush],
         &[Tool::CloneStamp],
         &[Tool::HistoryBrush],
         &[Tool::Eraser, Tool::BackgroundEraser, Tool::MagicEraser],
@@ -423,7 +423,7 @@ pub fn options_bar(app: &mut PhotocraftApp, ui: &mut egui::Ui) {
                 }
                 let tool = app.ui.tool;
                 // Brush edits here go through `tools.setBrush`, one journal entry per gesture (Rule 1).
-                if (tool.is_brushlike() && !matches!(tool, Tool::Brush | Tool::Pencil | Tool::Eraser)) || tool == Tool::QuickSelection {
+                if (tool.is_brushlike() && !matches!(tool, Tool::Brush | Tool::Pencil | Tool::MixerBrush | Tool::Eraser)) || tool == Tool::QuickSelection {
                     let before = app.session.tools.brush.clone();
                     let mut b = before.clone();
                     let pick = brush_preset_chip(ui, &mut b, &app.session.tools.presets);
@@ -456,19 +456,11 @@ pub fn options_bar(app: &mut PhotocraftApp, ui: &mut egui::Ui) {
                         if widgets::dropdown(ui, "brush-mode", &mut mode, &opts, 96.0) {
                             b.mode = mode;
                         }
-                        opt_label(ui, tl!("Opacity"));
-                        let mut o = b.opacity * 100.0;
-                        if widgets::value_field(ui, &mut o, 0.0..=100.0, "%", 62.0).changed() {
-                            b.opacity = o / 100.0;
-                        }
+                        percent_field(ui, tl!("Opacity"), &mut b.opacity, 0.0..=100.0, 62.0);
                         if icons::button(ui, "circle-dot", 24.0, b.pressure_opacity, tl!("Always use pressure for opacity")).clicked() {
                             b.pressure_opacity = !b.pressure_opacity;
                         }
-                        opt_label(ui, tl!("Flow"));
-                        let mut f = b.flow * 100.0;
-                        if widgets::value_field(ui, &mut f, 1.0..=100.0, "%", 62.0).changed() {
-                            b.flow = f / 100.0;
-                        }
+                        percent_field(ui, tl!("Flow"), &mut b.flow, 1.0..=100.0, 62.0);
                         let _ = icons::button(ui, "sparkles", 24.0, false, tl!("Enable airbrush-style build-up effects"));
                         opt_label(ui, tl!("Smoothing"));
                         smoothing_field(ui, b, 58.0);
@@ -495,11 +487,7 @@ pub fn options_bar(app: &mut PhotocraftApp, ui: &mut egui::Ui) {
                         if widgets::dropdown(ui, "pencil-mode", &mut mode, &opts, 96.0) {
                             b.mode = mode;
                         }
-                        opt_label(ui, tl!("Opacity"));
-                        let mut o = b.opacity * 100.0;
-                        if widgets::value_field(ui, &mut o, 0.0..=100.0, "%", if t.pro { 62.0 } else { 66.0 }).changed() {
-                            b.opacity = o / 100.0;
-                        }
+                        percent_field(ui, tl!("Opacity"), &mut b.opacity, 0.0..=100.0, if t.pro { 62.0 } else { 66.0 });
                         opt_label(ui, tl!("Smoothing"));
                         smoothing_field(ui, b, if t.pro { 58.0 } else { 66.0 });
                         widgets::vline(ui, 22.0);
@@ -512,27 +500,30 @@ pub fn options_bar(app: &mut PhotocraftApp, ui: &mut egui::Ui) {
                         opt_label(ui, tl!("Size"));
                         widgets::value_field(ui, &mut b.size, 1.0..=2500.0, "px", 76.0);
                         widgets::vline(ui, 22.0);
-                        opt_label(ui, tl!("Hardness"));
-                        let mut h = b.hardness * 100.0;
-                        if widgets::value_field(ui, &mut h, 0.0..=100.0, "%", 66.0).changed() {
-                            b.hardness = h / 100.0;
-                        }
-                        opt_label(ui, tl!("Opacity"));
-                        let mut o = b.opacity * 100.0;
-                        if widgets::value_field(ui, &mut o, 0.0..=100.0, "%", 66.0).changed() {
-                            b.opacity = o / 100.0;
-                        }
-                        opt_label(ui, tl!("Flow"));
-                        let mut f = b.flow * 100.0;
-                        if widgets::value_field(ui, &mut f, 1.0..=100.0, "%", 66.0).changed() {
-                            b.flow = f / 100.0;
-                        }
+                        percent_field(ui, tl!("Hardness"), &mut b.hardness, 0.0..=100.0, 66.0);
+                        percent_field(ui, tl!("Opacity"), &mut b.opacity, 0.0..=100.0, 66.0);
+                        percent_field(ui, tl!("Flow"), &mut b.flow, 1.0..=100.0, 66.0);
                         opt_label(ui, tl!("Smoothing"));
                         smoothing_field(ui, b, 66.0);
                         widgets::vline(ui, 22.0);
                         widgets::toggle(ui, &mut b.pressure_size, tl!("Pressure for Size"));
                         widgets::toggle(ui, &mut b.pressure_opacity, tl!("Pressure for Opacity"));
                     }
+                    Tool::MixerBrush => {
+                        picked = brush_preset_chip(ui, b, &app.session.tools.presets);
+                        crate::brush_picker::settings_toggle(app, ui);
+                        widgets::vline(ui, 22.0);
+                        for (label, value) in [
+                            (tl!("Wet"), &mut b.mixer.wet),
+                            (tl!("Load"), &mut b.mixer.load),
+                            (tl!("Mix"), &mut b.mixer.mix),
+                            (tl!("Flow"), &mut b.mixer.flow),
+                        ] {
+                            percent_field(ui, label, value, 0.0..=100.0, 62.0);
+                        }
+                        widgets::vline(ui, 22.0);
+                        widgets::checkbox(ui, &mut b.mixer.sample_all_layers, tl!("Sample All Layers"));
+                    }
                     Tool::RectMarquee | Tool::EllipseMarquee if t.pro => {
                         ui.spacing_mut().item_spacing.x = 2.0;
                         for (i, (icon, tip)) in [
@@ -836,6 +827,14 @@ fn opt_label(ui: &mut egui::Ui, s: &str) {
     ui.label(RichText::new(tl!(&text)).color(t.text_dim));
 }
 
+fn percent_field(ui: &mut egui::Ui, label: &str, value: &mut f32, range: std::ops::RangeInclusive<f32>, width: f32) {
+    opt_label(ui, label);
+    let mut percent = *value * 100.0;
+    if widgets::value_field(ui, &mut percent, range, "%", width).changed() {
+        *value = percent / 100.0;
+    }
+}
+
 fn hint(ui: &mut egui::Ui, s: &str) {
     let t = Tokens::get(ui.ctx());
     ui.label(RichText::new(s).color(t.text_faint));
diff --git a/crates/ui-egui/src/pencil_tests.rs b/crates/ui-egui/src/pencil_tests.rs
index 57ce98ff..f1919619 100644
--- a/crates/ui-egui/src/pencil_tests.rs
+++ b/crates/ui-egui/src/pencil_tests.rs
@@ -134,7 +134,7 @@ fn square_cursor_sits_on_the_pixel_grid() {
 }
 
 #[test]
-fn b_cycles_brush_and_pencil() {
+fn b_cycles_brush_pencil_and_mixer_brush() {
     let mut h = Harness::builder().with_size(vec2(1280.0, 800.0)).with_max_steps(64).build_eframe(|cc| {
         PhotocraftApp::setup_context(&cc.egui_ctx, Default::default());
         let mut app = PhotocraftApp::new(photocraft_engine::Session::new(), Default::default());
@@ -152,13 +152,18 @@ fn b_cycles_brush_and_pencil() {
     assert_eq!(h.state().ui.tool, Tool::Brush);
     press(&mut h, Modifiers::NONE);
     assert_eq!(h.state().ui.tool, Tool::Pencil);
+    press(&mut h, Modifiers::NONE);
+    assert_eq!(h.state().ui.tool, Tool::MixerBrush);
     // Use Shift Key for Tool Switch: ⇧B cycles, B keeps the group's tool.
     h.state_mut().session.edit_prefs(|p| p.tools.use_shift_key_for_tool_switch = true);
     press(&mut h, Modifiers::SHIFT);
     assert_eq!(h.state().ui.tool, Tool::Brush);
     press(&mut h, Modifiers::SHIFT);
     assert_eq!(h.state().ui.tool, Tool::Pencil);
+    press(&mut h, Modifiers::SHIFT);
+    assert_eq!(h.state().ui.tool, Tool::MixerBrush);
     press(&mut h, Modifiers::NONE);
-    assert_eq!(h.state().ui.tool, Tool::Pencil);
+    assert_eq!(h.state().ui.tool, Tool::MixerBrush);
     assert_eq!(Tool::from_name("pencil"), Some(Tool::Pencil));
+    assert_eq!(Tool::from_name("mixerBrush"), Some(Tool::MixerBrush));
 }
diff --git a/crates/ui-egui/src/retouch_ui.rs b/crates/ui-egui/src/retouch_ui.rs
index 8afb4bce..d349690c 100644
--- a/crates/ui-egui/src/retouch_ui.rs
+++ b/crates/ui-egui/src/retouch_ui.rs
@@ -1,6 +1,6 @@
 //! UI for the retouching tools (healing, clone, history brush, blur/sharpen/smudge, dodge/burn/
-//! sponge) and the smart selection tools (Quick Selection, Object Selection): gesture → engine
-//! command, options bars, and the clone-source marker.
+//! sponge, Mixer Brush) and the smart selection tools (Quick Selection, Object Selection): gesture
+//! → engine command, options bars, and the clone-source marker.
 
 use egui::{Color32, Stroke, vec2};
 use serde_json::{Value, json};
@@ -16,6 +16,7 @@ pub fn finish_stroke(app: &mut PhotocraftApp, tool: Tool, points: &[[f64; 3]], m
     let pts = json!(points);
     let (cmd, mut p): (&str, Value) = match tool {
         Tool::SpotHealing => ("paint.spotHealing", json!({"type": o.spot_type})),
+        Tool::MixerBrush => ("paint.mixerBrush", json!({})),
         Tool::Healing | Tool::CloneStamp => {
             let mut p = json!({"aligned": o.clone_aligned, "sampleLayer": o.clone_sample});
             // The Clone Source panel's active slot (set by ⌥-click) drives the stroke: the engine
@@ -137,7 +138,9 @@ fn pct(ui: &mut egui::Ui, label: &str, v: &mut f32) {
 
 /// Options bar for the retouching and smart-selection tools. Returns false for other tools.
 pub fn options_bar(app: &mut PhotocraftApp, ui: &mut egui::Ui, tool: Tool) -> bool {
-    if !tool.is_brushlike() && !matches!(tool, Tool::QuickSelection | Tool::ObjectSelection) || matches!(tool, Tool::Brush | Tool::Pencil | Tool::Eraser) {
+    if !tool.is_brushlike() && !matches!(tool, Tool::QuickSelection | Tool::ObjectSelection)
+        || matches!(tool, Tool::Brush | Tool::Pencil | Tool::MixerBrush | Tool::Eraser)
+    {
         return false;
     }
     let o = &mut app.ui.tool_options;
@@ -293,4 +296,48 @@ mod tests {
             }
         }
     }
+
+    #[test]
+    fn mixer_brush_is_selectable_and_paints_only_inside_the_selection_via_control() {
+        use crate::control::{ControlRequest, Outcome, handle};
+
+        let mut app = app();
+        app.run("paint.pencil", json!({"points": [[50, 30]], "size": 200, "color": "#204080"})).unwrap();
+        app.run("tools.setColors", json!({"foreground": "#f02010"})).unwrap();
+        app.run(
+            "tools.setBrush",
+            json!({
+                "pressureSize": false,
+                "size": 12,
+                "mixer": {"wet": 0.0, "load": 1.0, "mix": 0.0, "flow": 1.0}
+            }),
+        )
+        .unwrap();
+        app.run("select.rect", json!({"x": 35, "y": 20, "width": 30, "height": 20})).unwrap();
+        let before = {
+            let surface = active(&app).surface().unwrap();
+            [surface.rgba(20, 30), surface.rgba(50, 30), surface.rgba(80, 30)]
+        };
+
+        let ctx = egui::Context::default();
+        let (req, _rx) = ControlRequest::new(
+            "ui.pointer",
+            json!({
+                "tool": "mixerBrush",
+                "events": [
+                    {"kind": "down", "x": 8, "y": 30},
+                    {"kind": "move", "x": 92, "y": 30},
+                    {"kind": "up", "x": 92, "y": 30}
+                ]
+            }),
+        );
+        assert!(matches!(handle(&mut app, &ctx, &req), Outcome::Done(_)));
+        assert_eq!(app.ui.tool, Tool::MixerBrush);
+        assert_eq!(app.session.journal.last().map(|(id, _)| id.as_str()), Some("paint.mixerBrush"));
+
+        let surface = active(&app).surface().unwrap();
+        assert_ne!(surface.rgba(50, 30), before[1], "the selected pixels are mixed");
+        assert_eq!(surface.rgba(20, 30), before[0], "outside the selection is unchanged");
+        assert_eq!(surface.rgba(80, 30), before[2], "the far side outside the selection is unchanged");
+    }
 }
diff --git a/crates/ui-egui/src/state.rs b/crates/ui-egui/src/state.rs
index 31989e0d..7d510e69 100644
--- a/crates/ui-egui/src/state.rs
+++ b/crates/ui-egui/src/state.rs
@@ -18,6 +18,7 @@ pub enum Tool {
     Count,
     Brush,
     Pencil,
+    MixerBrush,
     Eraser,
     BackgroundEraser,
     MagicEraser,
@@ -51,7 +52,7 @@ pub enum Tool {
 }
 
 impl Tool {
-    pub const ALL: [Tool; 43] = [
+    pub const ALL: [Tool; 44] = [
         Tool::Move,
         Tool::RectMarquee,
         Tool::EllipseMarquee,
@@ -65,6 +66,7 @@ impl Tool {
         Tool::Count,
         Tool::Brush,
         Tool::Pencil,
+        Tool::MixerBrush,
         Tool::Eraser,
         Tool::BackgroundEraser,
         Tool::MagicEraser,
@@ -104,6 +106,7 @@ impl Tool {
             Tool::EllipseMarquee => "Elliptical Marquee Tool",
             Tool::Brush => "Brush Tool",
             Tool::Pencil => "Pencil Tool",
+            Tool::MixerBrush => "Mixer Brush Tool",
             Tool::Eraser => "Eraser Tool",
             Tool::BackgroundEraser => "Background Eraser Tool",
             Tool::MagicEraser => "Magic Eraser Tool",
@@ -150,6 +153,7 @@ impl Tool {
             self,
             Tool::Brush
                 | Tool::Pencil
+                | Tool::MixerBrush
                 | Tool::Eraser
                 | Tool::BackgroundEraser
                 | Tool::SpotHealing
@@ -169,7 +173,7 @@ impl Tool {
         match self {
             Tool::Move => 'V',
             Tool::RectMarquee | Tool::EllipseMarquee => 'M',
-            Tool::Brush | Tool::Pencil => 'B',
+            Tool::Brush | Tool::Pencil | Tool::MixerBrush => 'B',
             Tool::Eraser | Tool::BackgroundEraser | Tool::MagicEraser => 'E',
             Tool::Eyedropper | Tool::Ruler | Tool::Note | Tool::Count => 'I',
             Tool::Lasso | Tool::PolygonLasso => 'L',
@@ -197,6 +201,7 @@ impl Tool {
             Tool::RectMarquee => "⬚",
             Tool::EllipseMarquee => "◌",
             Tool::Brush => "🖌",
+            Tool::MixerBrush => "🖌",
             Tool::Eraser => "⌫",
             Tool::Eyedropper => "💧",
             Tool::Lasso | Tool::PolygonLasso => "L",
@@ -765,6 +770,8 @@ mod tests {
         assert_eq!(Tool::from_name("Rect"), Some(Tool::RectMarquee));
         assert_eq!(Tool::from_name("RectMarquee"), Some(Tool::RectMarquee));
         assert_eq!(Tool::from_name("Eraser Tool"), Some(Tool::Eraser));
+        assert_eq!(Tool::from_name("mixerBrush"), Some(Tool::MixerBrush));
+        assert_eq!(Tool::from_name("Mixer Brush Tool"), Some(Tool::MixerBrush));
         assert_eq!(Tool::from_name("nope"), None);
     }
 
diff --git a/docs/scorecard.md b/docs/scorecard.md
index 5bcc897e..53290092 100644
--- a/docs/scorecard.md
+++ b/docs/scorecard.md
@@ -8,7 +8,7 @@ Generated by `cargo xtask scorecard` from `perf/budgets.toml`, `perf/baseline.js
 |---|---:|---:|---:|---|
 | [Performance](#performance) | 3 | 22 | 12 | 46 scenarios: 3 within budget, 22 over budget or failing, 13 tracked only, 4 not run, 8 not measurable yet (baseline 2026-10-05) |
 | [File compatibility](#file-compatibility) | 1 | 8 | 18 | io corpus: oracle ≥ 146/170, round trip ≥ 169/170; psd-tools corpus: oracle ≥ 229/309, round trip ≥ 307/309; photoshop oracles: oracle ≥ 132/256, round trip ≥ 258/256 |
-| [Tools](#tools) | 4 | 14 | 12 |  |
+| [Tools](#tools) | 5 | 13 | 12 |  |
 | [Workspace and UI](#workspace-and-ui) | 0 | 4 | 19 | settings that do nothing: 60 of 134 (target 0) |
 | [Type](#type) | 0 | 3 | 6 |  |
 | [Automation](#automation) | 1 | 3 | 7 | 626 of 626 menu items live (100.0%) |
@@ -121,7 +121,7 @@ Corpus floors (`crates/io/tests/corpus.rs`): the enforced minimums; the corpus t
 | Id | Target | Status | Issue | Note |
 |---|---|---|---|---|
 | TOOL-213-1 | Pencil tool: aliased 1 px painting, square pixel-aligned cursor | done | [#213](https://github.com/storytold/photocraft/issues/213) | Tool::Pencil (B group): live aliased strokes on the pixel grid, square cursor, Auto Erase; pencil_tests.rs |
-| TOOL-213-2 | Mixer Brush tool on the toolbar | partial | [#213](https://github.com/storytold/photocraft/issues/213) | paint.mixerBrush (brush_cmds.rs:337) + panel options; no Tool variant |
+| TOOL-213-2 | Mixer Brush tool on the toolbar | done | [#213](https://github.com/storytold/photocraft/issues/213) | Tool::MixerBrush in the Brush (B) flyout; Wet/Load/Mix/Flow/Sample All Layers options, command/control dispatch and selection-clipping tests |
 | TOOL-213-3 | Patch tool with a live preview of the patched area | missing | [#213](https://github.com/storytold/photocraft/issues/213) | No patch command or tool |
 | TOOL-213-4 | Content-Aware Move tool reusing inpaint completion | missing | [#213](https://github.com/storytold/photocraft/issues/213) | inpaint::complete only used by spot healing (retouch_cmds.rs:386) |
 | TOOL-213-5 | Painting a type/shape/smart/fill layer offers to rasterize, then continues the stroke | done | [#213](https://github.com/storytold/photocraft/issues/213) | rasterize_prompt.rs: OK rasterizes then paints (two history states), Cancel does nothing; drivable via ui.dialog.confirm |
diff --git a/scorecard/tools.toml b/scorecard/tools.toml
index ff1b797b..9aa9a899 100644
--- a/scorecard/tools.toml
+++ b/scorecard/tools.toml
@@ -15,9 +15,9 @@ note = "Tool::Pencil (B group): live aliased strokes on the pixel grid, square c
 [[item]]
 id = "TOOL-213-2"
 target = "Mixer Brush tool on the toolbar"
-status = "partial"
+status = "done"
 issue = 213
-note = "paint.mixerBrush (brush_cmds.rs:337) + panel options; no Tool variant"
+note = "Tool::MixerBrush in the Brush (B) flyout; Wet/Load/Mix/Flow/Sample All Layers options, command/control dispatch and selection-clipping tests"
 
 [[item]]
 id = "TOOL-213-3"