diff --git a/packages/logic/src/items/base.ts b/packages/logic/src/items/base.ts
index fcb42bc..6837c67 100644
--- a/packages/logic/src/items/base.ts
+++ b/packages/logic/src/items/base.ts
@@ -34,10 +34,10 @@ export const createStatItemModule = (options: StatItemOptions): ItemModule => {
     const name = `${options.rawName}(+${options.statValue})`;
     const baseInfo = `${statLabel} +${options.statValue}`;
     const info = options.extraInfo ? `${baseInfo}<br>${options.extraInfo}` : baseInfo;
-    const onCalcStat = ((
+    const onCalcStat = (
         _context: GeneralActionContext | WarActionContext,
         statName: GeneralStatName | WarStatName,
-        value: number | [number, number],
+        value: number | [number, number]
     ): number | [number, number] => {
         if (statName !== options.statName) {
             return value;
@@ -46,7 +46,7 @@ export const createStatItemModule = (options: StatItemOptions): ItemModule => {
             return value + options.statValue;
         }
         return value;
-    }) as ItemModule['onCalcStat'];
+    };
 
     return {
         key: options.key,
@@ -59,6 +59,6 @@ export const createStatItemModule = (options: StatItemOptions): ItemModule => {
         consumable: false,
         reqSecu: options.reqSecu,
         unique: options.unique ?? false,
-        onCalcStat: onCalcStat!,
+        onCalcStat,
     };
 };
diff --git a/packages/logic/src/triggers/general-action.ts b/packages/logic/src/triggers/general-action.ts
index 676fb75..6fed42e 100644
--- a/packages/logic/src/triggers/general-action.ts
+++ b/packages/logic/src/triggers/general-action.ts
@@ -3,6 +3,7 @@ import { type GeneralActionContext, GeneralTriggerCaller } from './general.js';
 import type {
     GeneralStatBundleMap,
     GeneralStatName,
+    WarStatBundleMap,
     TriggerActionPhase,
     TriggerActionType,
     TriggerDomesticActionType,
diff --git a/packages/logic/src/triggers/special/types.ts b/packages/logic/src/triggers/special/types.ts
index 931f272..f7f7a36 100644
--- a/packages/logic/src/triggers/special/types.ts
+++ b/packages/logic/src/triggers/special/types.ts
@@ -1,6 +1,8 @@
 import type { GeneralTriggerState } from '@sammo-ts/logic/domain/entities.js';
 import type { GeneralActionModule } from '@sammo-ts/logic/triggers/general-action.js';
-import type { WarActionModule } from '@sammo-ts/logic/war/actions.js';
+import type { WarActionModule, WarActionContext } from '@sammo-ts/logic/war/actions.js';
+import type { GeneralActionContext } from '@sammo-ts/logic/triggers/general.js';
+import type { GeneralStatName, WarStatName } from '@sammo-ts/logic/triggers/types.js';
 
 export type TraitKind = 'domestic' | 'war' | 'personality';
 
@@ -11,8 +13,42 @@ export interface TraitSpec {
     kind: TraitKind;
 }
 
-import type { TraitOnCalcStat, TraitOnCalcOpposeStat, OnCalcStatParams } from '../types.js';
-export type { TraitOnCalcStat, TraitOnCalcOpposeStat, OnCalcStatParams };
+import type {
+    GeneralStatName,
+    GeneralStatBundleMap,
+    WarStatName,
+    WarStatBundleMap,
+} from '../types.js';
+
+export interface TraitOnCalcStat<TriggerState extends GeneralTriggerState = GeneralTriggerState> {
+    <T extends GeneralStatName>(
+        context: GeneralActionContext<TriggerState>,
+        statName: T,
+        value: GeneralStatBundleMap[T]['value'],
+        aux?: GeneralStatBundleMap[T]['aux']
+    ): GeneralStatBundleMap[T]['return'];
+    <T extends WarStatName>(
+        context: WarActionContext<TriggerState>,
+        statName: T,
+        value: WarStatBundleMap[T]['value'],
+        aux?: WarStatBundleMap[T]['aux']
+    ): WarStatBundleMap[T]['return'];
+}
+
+export interface TraitOnCalcOpposeStat<TriggerState extends GeneralTriggerState = GeneralTriggerState> {
+    <T extends GeneralStatName>(
+        context: GeneralActionContext<TriggerState>,
+        statName: T,
+        value: GeneralStatBundleMap[T]['value'],
+        aux?: GeneralStatBundleMap[T]['aux']
+    ): GeneralStatBundleMap[T]['return'];
+    <T extends WarStatName>(
+        context: WarActionContext<TriggerState>,
+        statName: T,
+        value: WarStatBundleMap[T]['value'],
+        aux?: WarStatBundleMap[T]['aux']
+    ): WarStatBundleMap[T]['return'];
+}
 
 export type TraitModule<TriggerState extends GeneralTriggerState = GeneralTriggerState> = TraitSpec &
     Omit<GeneralActionModule<TriggerState>, 'onCalcStat' | 'onCalcOpposeStat'> &
diff --git a/packages/logic/src/triggers/special/war/che_무쌍.ts b/packages/logic/src/triggers/special/war/che_무쌍.ts
index 14d5e5d..a434492 100644
--- a/packages/logic/src/triggers/special/war/che_무쌍.ts
+++ b/packages/logic/src/triggers/special/war/che_무쌍.ts
@@ -1,5 +1,7 @@
-import type { TraitOnCalcStat, TraitModule, OnCalcStatParams } from '@sammo-ts/logic/triggers/special/types.js';
-import type { WarStatName, WarStatBundleMap } from '@sammo-ts/logic/triggers/types.js';
+import type { TraitOnCalcStat, TraitModule } from '@sammo-ts/logic/triggers/special/types.js';
+import type { GeneralActionContext } from '@sammo-ts/logic/triggers/general.js';
+import type { WarActionContext } from '@sammo-ts/logic/war/actions.js';
+import type { GeneralStatName, WarStatName } from '@sammo-ts/logic/triggers/types.js';
 import { getMetaNumber } from '@sammo-ts/logic/war/utils.js';
 
 import { WarUnit } from '@sammo-ts/logic/war/units.js';
@@ -9,20 +11,19 @@ type WarUnitWithGeneral = WarUnit & { getGeneral: () => { meta: Record<string, u
 const hasGeneral = (unit: WarUnit): unit is WarUnitWithGeneral =>
     'getGeneral' in unit && typeof (unit as { getGeneral?: unknown }).getGeneral === 'function';
 
-const onCalcStat: TraitOnCalcStat = <T extends WarStatName>(
-    ...args: [
-        context: any,
-        statName: T,
-        value: WarStatBundleMap[T]['value'],
-        aux: WarStatBundleMap[T]['aux'],
-    ]
-) => {
-    const [_context, statName, value, aux] = args as OnCalcStatParams;
-    if (statName === 'warCriticalRatio' && aux.isAttacker) {
-        return (value + 0.1) as WarStatBundleMap[T]['return'];
+const onCalcStat = ((
+    _context: GeneralActionContext | WarActionContext,
+    statName: GeneralStatName | WarStatName,
+    value: number | [number, number],
+    aux?: unknown
+): number | [number, number] => {
+    const isAttacker = typeof aux === 'object' && aux !== null && (aux as { isAttacker?: unknown }).isAttacker === true;
+
+    if (statName === 'warCriticalRatio' && isAttacker && typeof value === 'number') {
+        return value + 0.1;
     }
-    return value as WarStatBundleMap[T]['return'];
-};
+    return value;
+}) as unknown as TraitOnCalcStat;
 
 export const traitModule: TraitModule = {
     key: 'che_무쌍',
diff --git a/packages/logic/src/triggers/types.ts b/packages/logic/src/triggers/types.ts
index a2aa0cd..088d365 100644
--- a/packages/logic/src/triggers/types.ts
+++ b/packages/logic/src/triggers/types.ts
@@ -1,6 +1,7 @@
 import type { GeneralTriggerState } from '@sammo-ts/logic/domain/entities.js';
 import type { GeneralActionContext } from './general.js';
 import type { WarActionContext } from '../war/actions.js';
+export type TriggerActionType = '장비매매';
 
 export type TriggerActionPhase = '판매' | '구매';
 
@@ -55,11 +56,11 @@ export type WarStatBundle =
     | { statName: 'warMagicTrialProb'; value: number; aux: undefined; return: number }
     | { statName: 'warMagicSuccessProb'; value: number; aux: undefined; return: number }
     | {
-          statName: `dex${number}`;
-          value: number;
-          aux: { isAttacker: boolean; opposeType: { armType: number } | null };
-          return: number;
-      };
+        statName: `dex${number}`;
+        value: number;
+        aux: { isAttacker: boolean; opposeType: { armType: number } | null };
+        return: number;
+    };
 
 export type WarStatBundleMap = {
     [T in WarStatBundle as T['statName']]: T;
@@ -67,29 +68,34 @@ export type WarStatBundleMap = {
 
 export type WarStatName = WarStatBundle['statName'];
 
-export type OnCalcStatParams<TriggerState extends GeneralTriggerState = GeneralTriggerState> = {
-    [T in WarStatName]: [
-        context: T extends GeneralStatName
-            ? GeneralActionContext<TriggerState> | WarActionContext<TriggerState>
-            : WarActionContext<TriggerState>,
+export interface TraitOnCalcStat<TriggerState extends GeneralTriggerState = GeneralTriggerState> {
+    <T extends GeneralStatName>(
+        context: GeneralActionContext<TriggerState>,
         statName: T,
-        value: WarStatBundleMap[T]['value'],
-        aux: WarStatBundleMap[T]['aux'],
-    ];
-}[WarStatName];
-
-export type TraitOnCalcStat<TriggerState extends GeneralTriggerState = GeneralTriggerState> = {
+        value: GeneralStatBundleMap[T]['value'],
+        aux?: GeneralStatBundleMap[T]['aux']
+    ): GeneralStatBundleMap[T]['return'];
     <T extends WarStatName>(
-        context: T extends GeneralStatName
-            ? GeneralActionContext<TriggerState> | WarActionContext<TriggerState>
-            : WarActionContext<TriggerState>,
+        context: WarActionContext<TriggerState>,
         statName: T,
         value: WarStatBundleMap[T]['value'],
-        aux: WarStatBundleMap[T]['aux'],
+        aux?: WarStatBundleMap[T]['aux']
     ): WarStatBundleMap[T]['return'];
-};
+}
 
-export type TraitOnCalcOpposeStat<TriggerState extends GeneralTriggerState = GeneralTriggerState> =
-    TraitOnCalcStat<TriggerState>;
+export interface TraitOnCalcOpposeStat<TriggerState extends GeneralTriggerState = GeneralTriggerState> {
+    <T extends GeneralStatName>(
+        context: GeneralActionContext<TriggerState>,
+        statName: T,
+        value: GeneralStatBundleMap[T]['value'],
+        aux?: GeneralStatBundleMap[T]['aux']
+    ): GeneralStatBundleMap[T]['return'];
+    <T extends WarStatName>(
+        context: WarActionContext<TriggerState>,
+        statName: T,
+        value: WarStatBundleMap[T]['value'],
+        aux?: WarStatBundleMap[T]['aux']
+    ): WarStatBundleMap[T]['return'];
+}
 
 export type TriggerActionType = '장비매매';