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new file mode 100644
index 0000000..07738ac
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@@ -0,0 +1,41 @@
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new file mode 100644
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diff --git a/Assets/TcgEngine/Resources/Abilities/play/play_damage3.asset b/Assets/TcgEngine/Resources/Abilities/play/play_damage3.asset
new file mode 100644
index 0000000..9e62f74
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diff --git a/Assets/TcgEngine/Resources/Abilities/play/play_damage3.asset.meta b/Assets/TcgEngine/Resources/Abilities/play/play_damage3.asset.meta
new file mode 100644
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diff --git a/Assets/TcgEngine/Resources/Abilities/spells/spell_ally_hp_4.asset b/Assets/TcgEngine/Resources/Abilities/spells/spell_ally_hp_4.asset
new file mode 100644
index 0000000..85249d8
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+++ b/Assets/TcgEngine/Resources/Abilities/spells/spell_ally_hp_4.asset
@@ -0,0 +1,38 @@
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diff --git a/Assets/TcgEngine/Resources/Abilities/spells/spell_ally_hp_4.asset.meta b/Assets/TcgEngine/Resources/Abilities/spells/spell_ally_hp_4.asset.meta
new file mode 100644
index 0000000..57a0065
--- /dev/null
+++ b/Assets/TcgEngine/Resources/Abilities/spells/spell_ally_hp_4.asset.meta
@@ -0,0 +1,8 @@
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diff --git a/Assets/TcgEngine/Resources/Cards/Fire/firefox.asset b/Assets/TcgEngine/Resources/Cards/Fire/firefox.asset
index 4cb1809..308f500 100644
--- a/Assets/TcgEngine/Resources/Cards/Fire/firefox.asset
+++ b/Assets/TcgEngine/Resources/Cards/Fire/firefox.asset
@@ -23,13 +23,10 @@ MonoBehaviour:
   mana: 1
   attack: 1
   hp: 20
-  mana_fire: 0
-  mana_forest: 0
-  mana_water: 0
   traits: []
   stats: []
   abilities:
-  - {fileID: 11400000, guid: 91c599c9893ab47a69a039c0ed0215cc, type: 2}
+  - {fileID: 11400000, guid: d006aa7902864824d907d4aa6b62de09, type: 2}
   text: "<b>\u65BD\u653E(2):</b> \u5C06\u4E00\u5F20\u6CD5\u672F\u724C\u9001\u56DE\u4F60\u7684\u624B\u724C\u3002"
   desc: 
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diff --git a/Assets/TcgEngine/Resources/Cards/Fire/imp.asset b/Assets/TcgEngine/Resources/Cards/Fire/imp.asset
index 042539e..1f36ca8 100644
--- a/Assets/TcgEngine/Resources/Cards/Fire/imp.asset
+++ b/Assets/TcgEngine/Resources/Cards/Fire/imp.asset
@@ -13,10 +13,11 @@ MonoBehaviour:
   m_Name: imp
   m_EditorClassIdentifier: 
   id: imp
-  title: 小鬼
+  title: "\u5C0F\u9B3C"
   art_full: {fileID: 21300000, guid: e74d128a608ae4c449e33aaf6449ee5e, type: 3}
   art_board: {fileID: 21300000, guid: e4ceb28c84c0b8846a348abfad791085, type: 3}
   type: 10
+  camp: 0
   team: {fileID: 11400000, guid: 6bbb96863ece0314fb318c0fce569afc, type: 2}
   rarity: {fileID: 11400000, guid: fab1a52f5a36cc942985dea95be18ac9, type: 2}
   mana: 2
@@ -25,8 +26,8 @@ MonoBehaviour:
   traits: []
   stats: []
   abilities:
-  - {fileID: 11400000, guid: 4f4dd01a7c411ab408c5ca18edbef253, type: 2}
-  text: <b>打出:</b> 造成1点伤害。
+  - {fileID: 11400000, guid: e2cae01651c214277978e2e91d4cc0a2, type: 2}
+  text: "<b>\u6253\u51FA:</b> \u9020\u62101\u70B9\u4F24\u5BB3\u3002"
   desc: 
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     type: 3}
diff --git a/Assets/TcgEngine/Resources/Cards/Forest/tree_angry.asset b/Assets/TcgEngine/Resources/Cards/Forest/tree_angry.asset
index c3d8f19..7909272 100644
--- a/Assets/TcgEngine/Resources/Cards/Forest/tree_angry.asset
+++ b/Assets/TcgEngine/Resources/Cards/Forest/tree_angry.asset
@@ -13,20 +13,21 @@ MonoBehaviour:
   m_Name: tree_angry
   m_EditorClassIdentifier: 
   id: tree_angry
-  title: 愤怒之树
+  title: "\u6124\u6012\u4E4B\u6811"
   art_full: {fileID: 21300000, guid: df4f7d3c3ffc18c42bdecfa498fa53da, type: 3}
   art_board: {fileID: 21300000, guid: b4baa2ca665d5aa42be490f5a09ea949, type: 3}
   type: 10
+  camp: 0
   team: {fileID: 11400000, guid: b80d8061c5bdb2e408e62a08e0e743ca, type: 2}
   rarity: {fileID: 11400000, guid: fab1a52f5a36cc942985dea95be18ac9, type: 2}
   mana: 3
   attack: 3
-  hp: 5
+  hp: 30
   traits: []
   stats: []
   abilities:
   - {fileID: 11400000, guid: 1bc895e873a2be145898a86a2fb9ca03, type: 2}
-  text: 再生
+  text: "\u518D\u751F"
   desc: 
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diff --git a/Assets/TcgEngine/Resources/Effects/damage_double.asset b/Assets/TcgEngine/Resources/Effects/damage_double.asset
new file mode 100644
index 0000000..a4f1d10
--- /dev/null
+++ b/Assets/TcgEngine/Resources/Effects/damage_double.asset
@@ -0,0 +1,18 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
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diff --git a/Assets/TcgEngine/Resources/Effects/damage_double.asset.meta b/Assets/TcgEngine/Resources/Effects/damage_double.asset.meta
new file mode 100644
index 0000000..583bbea
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@@ -0,0 +1,8 @@
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diff --git a/Assets/TcgEngine/Resources/Effects/damage_hook_add_all_hp_4.asset b/Assets/TcgEngine/Resources/Effects/damage_hook_add_all_hp_4.asset
new file mode 100644
index 0000000..59d988e
--- /dev/null
+++ b/Assets/TcgEngine/Resources/Effects/damage_hook_add_all_hp_4.asset
@@ -0,0 +1,19 @@
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+  double_damage_on_half_hp: 0
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+  kill_abilities:
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diff --git a/Assets/TcgEngine/Resources/Effects/damage_hook_add_all_hp_4.asset.meta b/Assets/TcgEngine/Resources/Effects/damage_hook_add_all_hp_4.asset.meta
new file mode 100644
index 0000000..c79217f
--- /dev/null
+++ b/Assets/TcgEngine/Resources/Effects/damage_hook_add_all_hp_4.asset.meta
@@ -0,0 +1,8 @@
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diff --git a/Assets/TcgEngine/Scripts/Effects/EffectDamage.cs b/Assets/TcgEngine/Scripts/Effects/EffectDamage.cs
index 3846b89..e445283 100644
--- a/Assets/TcgEngine/Scripts/Effects/EffectDamage.cs
+++ b/Assets/TcgEngine/Scripts/Effects/EffectDamage.cs
@@ -12,8 +12,15 @@ namespace TcgEngine
     [CreateAssetMenu(fileName = "effect", menuName = "TcgEngine/Effect/Damage", order = 10)]
     public class EffectDamage : EffectData
     {
+        [Header("伤害设置")]
         public TraitData bonus_damage;
 
+        [Header("半血翻倍")]
+        public bool double_damage_on_half_hp = false;  // 当目标生命值低于50%时伤害翻倍
+
+        [Header("击杀触发")]
+        public AbilityData kill_trigger_ability = null;  // 击杀后触发的技能
+
         public override void DoEffect(GameLogic logic, AbilityData ability, Card caster, Player target)
         {
             int damage = GetDamage(logic.GameData, caster, ability.value);
@@ -22,8 +29,21 @@ namespace TcgEngine
 
         public override void DoEffect(GameLogic logic, AbilityData ability, Card caster, Card target)
         {
-            int damage = GetDamage(logic.GameData, caster, ability.value);
+            int damage = GetDamageWithHalfHpBonus(logic.GameData, caster, ability.value, target);
+
+            // 是否可以击杀
+            int target_hp_before = target != null ? target.GetHP() : 0;
+            bool will_kill = target != null && target_hp_before <= damage;
+
+            // 造成伤害
             logic.DamageCard(caster, target, damage, true);
+
+            // 如果击杀了目标且配置了击杀触发技能，则触发技能
+            if (will_kill && target != null && kill_trigger_ability != null)
+            {
+                Debug.Log("满足击杀条件");
+                TriggerKillAbility(logic, caster, target);
+            }
         }
 
         private int GetDamage(Game data, Card caster, int value)
@@ -33,5 +53,33 @@ namespace TcgEngine
             return damage;
         }
 
+        private int GetDamageWithHalfHpBonus(Game data, Card caster, int value, Card target)
+        {
+            int damage = GetDamage(data, caster, value);
+
+            // 半血伤害翻倍
+            if (double_damage_on_half_hp && target != null)
+            {
+                int current_hp = target.GetHP();
+                int max_hp = target.CardData.hp;
+                float hp_percentage = (float)current_hp / max_hp;
+
+                if (hp_percentage <= 0.5f) // 生命值低于等于50%
+                {
+                    damage *= 2;
+                }
+            }
+
+            return damage;
+        }
+
+        private void TriggerKillAbility(GameLogic logic, Card caster, Card killed_target)
+        {
+            if (kill_trigger_ability != null && caster != null)
+            {
+                Debug.Log("触发击杀钩子");
+                logic.TriggerAbilityDelayed(kill_trigger_ability, caster, killed_target);
+            }
+        }
     }
 }
\ No newline at end of file