Bosses prefer not to use sacrificial moves

src/data/move.ts

@@ -664,6 +664,8 @@ export class SacrificialAttr extends MoveEffectAttr {
   }
 
   getUserBenefitScore(user: Pokemon, target: Pokemon, move: Move): integer {
+    if (user.isBoss())
+      return -20;
     return Math.ceil(((1 - user.getHpRatio()) * 10 - 10) * (target.getAttackTypeEffectiveness(move.type) - 0.5));
   }
 }