diff --git a/server/match.py b/server/match.py
index cfca24ef..dcadfcc1 100644
--- a/server/match.py
+++ b/server/match.py
@@ -79,7 +79,7 @@
     DamageIncreaseValue, DamageMultiplyValue, DamageDecreaseValue,
 )
 from .struct import (
-    SkillActionArguments, ObjectPosition, DiceCost
+    ObjectPosition, DiceCost
 )
 from .elemental_reaction import (
     check_elemental_reaction,
@@ -1155,28 +1155,11 @@ def _respond_use_skill(self, response: UseSkillResponse):
             value = cost_value,
             mode = 'REAL'
         )  # TODO: should use original value. need test.
-        skill_action_args = SkillActionArguments(
-            player_id = response.player_id,
-            our_active_charactor_id = self.player_tables[
-                response.player_id].active_charactor_id,
-            enemy_active_charactor_id = self.player_tables[
-                1 - response.player_id].active_charactor_id,
-            our_charactors = [
-                i for i, c in enumerate(self.player_tables[
-                    response.player_id].charactors)
-                if c.is_alive
-            ],
-            enemy_charactors = [
-                i for i, c in enumerate(self.player_tables[
-                    1 - response.player_id].charactors)
-                if c.is_alive
-            ],
-        )
         actions: List[Actions] = [RemoveDiceAction(
             player_id = response.player_id,
             dice_ids = response.cost_ids,
         )]
-        actions += skill.get_actions(skill_action_args)  # TODO add information
+        actions += skill.get_actions(self)  # TODO add information
         actions.append(SkillEndAction(
             player_id = response.player_id,
             charactor_id = request.charactor_id,
diff --git a/server/object_base.py b/server/object_base.py
index d48feb93..3af9b4bb 100644
--- a/server/object_base.py
+++ b/server/object_base.py
@@ -19,7 +19,7 @@
 )
 from .modifiable_values import ModifiableValueTypes, DamageValue
 from .struct import (
-    SkillActionArguments, ObjectPosition, DiceCost, CardActionTarget
+    ObjectPosition, DiceCost, CardActionTarget
 )
 from .interaction import RequestActionType
 
@@ -96,7 +96,7 @@ def is_valid(self, hp: int, charge: int) -> bool:
         """
         return True
 
-    def get_actions(self, args: SkillActionArguments) -> List[Actions]:
+    def get_actions(self, match: Any) -> List[Actions]:
         """
         The skill is triggered, and get actions of the skill.
         By default, it will generate three actions:
@@ -107,13 +107,13 @@ def get_actions(self, args: SkillActionArguments) -> List[Actions]:
         """
         return [
             ChargeAction(
-                player_id = args.player_id,
-                charactor_id = args.our_active_charactor_id,
+                player_id = self.position.player_id,
+                charactor_id = self.position.charactor_id,
                 charge = 1,
             ),
             MakeDamageAction(
-                player_id = args.player_id,
-                target_id = 1 - args.player_id,
+                player_id = self.position.player_id,
+                target_id = 1 - self.position.player_id,
                 damage_value_list = [
                     DamageValue(
                         position = self.position,
@@ -228,12 +228,12 @@ def is_valid(self, hp: int, charge: int) -> bool:
         """
         return self.charge <= charge
 
-    def get_actions(self, args: SkillActionArguments) -> List[Actions]:
+    def get_actions(self, match: Any) -> List[Actions]:
         """
         When using elemental burst, the charge of the active charactor will be
         reduced by `self.charge`.
         """
-        actions = super().get_actions(args)
+        actions = super().get_actions(match)
         for action in actions:
             if isinstance(action, ChargeAction):
                 action.charge = -self.charge
diff --git a/server/struct.py b/server/struct.py
index 3d698283..21e7bd8f 100644
--- a/server/struct.py
+++ b/server/struct.py
@@ -63,17 +63,6 @@ class DamageValue(BaseModel):
     target_charactor_id: int = -1
 
 
-class SkillActionArguments(BaseModel):
-    """
-    Arguments used in getting skill actions.
-    """
-    player_id: int
-    our_active_charactor_id: int
-    enemy_active_charactor_id: int
-    our_charactors: List[int]
-    enemy_charactors: List[int]
-
-
 class CardActionTarget(BaseModel):
     """
     The target of a card action.