diff --git a/module/applications/sheets/character-sheet.mjs b/module/applications/sheets/character-sheet.mjs
index ff6dc81..7fe3f72 100644
--- a/module/applications/sheets/character-sheet.mjs
+++ b/module/applications/sheets/character-sheet.mjs
@@ -18,7 +18,8 @@ export default class AwECharacterSheet extends AwEActorSheet {
       createKit: AwECharacterSheet.#onCreateKit,
       createEquipment: AwECharacterSheet.#onCreateEquipment,
       flowPointsPlus: AwECharacterSheet.#onFlowPointsPlus,
-      flowPointsMinus: AwECharacterSheet.#onFlowPointsMinus
+      flowPointsMinus: AwECharacterSheet.#onFlowPointsMinus,
+      rollField: AwECharacterSheet.#onRollField
     }
   }
 
@@ -83,7 +84,13 @@ export default class AwECharacterSheet extends AwEActorSheet {
         break
       case "biography":
         context.tab = context.tabs.biography
-        context.fields = doc.itemTypes.field
+        context.fields = doc.itemTypes.field.map(item => ({
+          ...item,
+          keyAttrLabel: game.i18n.localize(SYSTEM.ATTRIBUTES[item.system.keyAttribute]?.label ?? item.system.keyAttribute),
+          keyAttr2Label: item.system.keyAttribute2
+            ? game.i18n.localize(SYSTEM.ATTRIBUTES[item.system.keyAttribute2]?.label ?? item.system.keyAttribute2)
+            : null
+        }))
         context.archetypes = doc.itemTypes.archetype
         context.backgrounds = doc.itemTypes.background
         context.enrichedDescription = await foundry.applications.ux.TextEditor.implementation.enrichHTML(
@@ -187,4 +194,17 @@ export default class AwECharacterSheet extends AwEActorSheet {
     const current = this.actor.system.flowPoints.value
     this.actor.update({ "system.flowPoints.value": Math.max(0, current - 1) })
   }
+
+  /**
+   * Roll the key attribute check from a Field item.
+   * @param {PointerEvent} event The triggering event.
+   * @param {HTMLElement} target The target element.
+   */
+  static async #onRollField(event, target) {
+    const itemId = target.closest("[data-item-id]")?.dataset.itemId
+    const item = this.document.items.get(itemId)
+    if (!item) return
+    const attrId = target.dataset.attributeId ?? item.system.keyAttribute
+    await this.document.rollAttribute(attrId)
+  }
 }
diff --git a/module/models/character.mjs b/module/models/character.mjs
index 88d2f9e..4a881fc 100644
--- a/module/models/character.mjs
+++ b/module/models/character.mjs
@@ -37,8 +37,10 @@ export default class AwECharacter extends foundry.abstract.TypeDataModel {
     // dc = 10 + mod (computed)
     // bonus: manual +/- bonus
     const attributeField = () => new fields.SchemaField({
-      boostLevel: new fields.NumberField({ ...requiredInteger, initial: 0, min: 0, max: 4,
-        choices: {0:"0", 1:"1", 2:"2", 3:"3", 4:"4"} }),
+      // boosts: permanent +1 increments from background, field, step5, and level 3/6/9 progression
+      // max 7: 4 at creation + 3 from additional boosts at levels 3, 6, 9
+      boostLevel: new fields.NumberField({ ...requiredInteger, initial: 0, min: 0, max: 7,
+        choices: Object.fromEntries(Array.from({length: 8}, (_, i) => [i, String(i)])) }),
       bonus: new fields.NumberField({ required: true, nullable: false, integer: true, initial: 0 })
     })
 
@@ -61,6 +63,8 @@ export default class AwECharacter extends foundry.abstract.TypeDataModel {
       const attr = this.attributes[attrId]
       attr.mod = level + attr.boostLevel + attr.bonus
       attr.dc = 10 + attr.mod
+      const bonusPart = attr.bonus !== 0 ? ` + Bonus ${attr.bonus >= 0 ? '+' : ''}${attr.bonus}` : ''
+      attr.modBreakdown = `Level ${level} + Boosts ${attr.boostLevel}${bonusPart} = ${attr.mod >= 0 ? '+' : ''}${attr.mod}`
     }
   }
 }
diff --git a/templates/character-biography.hbs b/templates/character-biography.hbs
index 1b6ab5e..772507b 100644
--- a/templates/character-biography.hbs
+++ b/templates/character-biography.hbs
@@ -19,6 +19,16 @@
     <div class="item-row" data-item-id="{{id}}" data-item-uuid="{{uuid}}" data-drag="true">
       <img src="{{img}}" class="item-img" alt="{{name}}" />
       <span class="item-name">{{name}}</span>
+      <span class="item-key-attr">
+        <a class="rollable field-roll" data-action="rollField" data-attribute-id="{{system.keyAttribute}}" data-tooltip="Roll {{keyAttrLabel}}">
+          <i class="fas fa-dice-d20"></i> {{keyAttrLabel}}
+        </a>
+        {{#if keyAttr2Label}}
+        / <a class="rollable field-roll" data-action="rollField" data-attribute-id="{{system.keyAttribute2}}" data-tooltip="Roll {{keyAttr2Label}}">
+          {{keyAttr2Label}}
+        </a>
+        {{/if}}
+      </span>
       <div class="item-controls">
         <a class="item-control" data-action="edit" data-item-id="{{id}}" data-item-uuid="{{uuid}}" data-tooltip="Edit"><i class="fas fa-edit"></i></a>
         <a class="item-control" data-action="delete" data-item-id="{{id}}" data-item-uuid="{{uuid}}" data-tooltip="Delete"><i class="fas fa-trash"></i></a>
diff --git a/templates/character-main.hbs b/templates/character-main.hbs
index 1524c94..b79f7a8 100644
--- a/templates/character-main.hbs
+++ b/templates/character-main.hbs
@@ -17,28 +17,28 @@
         <tr>
           <td class="attr-label rollable" data-attribute-id="agility">{{localize "AWEMMY.Attribute.Agility"}} <i class="fa-solid fa-dice-d20"></i></td>
           <td>{{formInput systemFields.attributes.fields.agility.fields.boostLevel value=system.attributes.agility.boostLevel disabled=isPlayMode}}</td>
-          <td class="attr-mod">{{system.attributes.agility.mod}}</td>
+          <td class="attr-mod" data-tooltip="{{system.attributes.agility.modBreakdown}}">{{system.attributes.agility.mod}}</td>
           <td class="attr-dc">{{system.attributes.agility.dc}}</td>
           <td>{{formInput systemFields.attributes.fields.agility.fields.bonus value=system.attributes.agility.bonus disabled=isPlayMode}}</td>
         </tr>
         <tr>
           <td class="attr-label rollable" data-attribute-id="fitness">{{localize "AWEMMY.Attribute.Fitness"}} <i class="fa-solid fa-dice-d20"></i></td>
           <td>{{formInput systemFields.attributes.fields.fitness.fields.boostLevel value=system.attributes.fitness.boostLevel disabled=isPlayMode}}</td>
-          <td class="attr-mod">{{system.attributes.fitness.mod}}</td>
+          <td class="attr-mod" data-tooltip="{{system.attributes.fitness.modBreakdown}}">{{system.attributes.fitness.mod}}</td>
           <td class="attr-dc">{{system.attributes.fitness.dc}}</td>
           <td>{{formInput systemFields.attributes.fields.fitness.fields.bonus value=system.attributes.fitness.bonus disabled=isPlayMode}}</td>
         </tr>
         <tr>
           <td class="attr-label rollable" data-attribute-id="awareness">{{localize "AWEMMY.Attribute.Awareness"}} <i class="fa-solid fa-dice-d20"></i></td>
           <td>{{formInput systemFields.attributes.fields.awareness.fields.boostLevel value=system.attributes.awareness.boostLevel disabled=isPlayMode}}</td>
-          <td class="attr-mod">{{system.attributes.awareness.mod}}</td>
+          <td class="attr-mod" data-tooltip="{{system.attributes.awareness.modBreakdown}}">{{system.attributes.awareness.mod}}</td>
           <td class="attr-dc">{{system.attributes.awareness.dc}}</td>
           <td>{{formInput systemFields.attributes.fields.awareness.fields.bonus value=system.attributes.awareness.bonus disabled=isPlayMode}}</td>
         </tr>
         <tr>
           <td class="attr-label rollable" data-attribute-id="influence">{{localize "AWEMMY.Attribute.Influence"}} <i class="fa-solid fa-dice-d20"></i></td>
           <td>{{formInput systemFields.attributes.fields.influence.fields.boostLevel value=system.attributes.influence.boostLevel disabled=isPlayMode}}</td>
-          <td class="attr-mod">{{system.attributes.influence.mod}}</td>
+          <td class="attr-mod" data-tooltip="{{system.attributes.influence.modBreakdown}}">{{system.attributes.influence.mod}}</td>
           <td class="attr-dc">{{system.attributes.influence.dc}}</td>
           <td>{{formInput systemFields.attributes.fields.influence.fields.bonus value=system.attributes.influence.bonus disabled=isPlayMode}}</td>
         </tr>