diff --git a/Crawler/Monster.cpp b/Crawler/Monster.cpp
index 01723f10..a7dd49c2 100644
--- a/Crawler/Monster.cpp
+++ b/Crawler/Monster.cpp
@@ -254,9 +254,7 @@ bool Monster::Hurt(int damage,bool onUpperLevel){
 	if(!IsAlive()){
 		animation.ChangeState(internal_animState,GetDeathAnimationName());
 	}
-	if(GetStrategy()=="Slime King"&&phase==5){
-		iframe_timer=iframeTimeUponHit;
-	}
+	iframe_timer=GET_FLOAT(Attribute::IFRAME_TIME_UPON_HIT);
 	return true;
 }
 
@@ -381,4 +379,8 @@ void Monster::SetSize(float newSize,bool immediate){
 	}else{
 		targetSize=newSize;
 	}	
+}
+
+void Monster::Set(_ATTRIBUTE a,std::variant<VARIANTS>val){
+	attributes[a]=val;
 }
\ No newline at end of file
diff --git a/Crawler/Monster.h b/Crawler/Monster.h
index 0d38e940..4cd235ef 100644
--- a/Crawler/Monster.h
+++ b/Crawler/Monster.h
@@ -5,6 +5,13 @@
 #include "Buff.h"
 #include "olcUTIL_Animate2D.h"
 #include "DamageNumber.h"
+#include <variant>
+#include "MonsterAttribute.h"
+
+#define GET_FLOAT(attribute) _Get<float>(attribute);
+#define GET_INT(attribute) _Get<int>(attribute);
+#define GET_STRING(attribute) _Get<std::string>(attribute);
+#define GET_BOOL(attribute) _Get<bool>(attribute);
 
 struct Player;
 
@@ -87,8 +94,8 @@ private:
 	std::shared_ptr<DamageNumber>damageNumberPtr;
 	int phase=0;
 	bool diesNormally=true; //If set to false, the monster death is handled in a special way. Set it to true when it's time to die.
-	float iframeTimeUponHit=0;
 	float targetSize=0;
+	std::map<_ATTRIBUTE,std::variant<VARIANTS>>attributes;
 protected:
 public:
 	Monster()=delete;
@@ -134,6 +141,28 @@ public:
 	float GetZ();
 	std::string GetStrategy();
 	void SetSize(float newSize,bool immediate=true);
+	void Set(_ATTRIBUTE a,std::variant<VARIANTS>val);
+	template<typename T>
+	T _Get(_ATTRIBUTE a){
+		if(attributes.count(a)>0){
+			return std::get<T>(attributes[a]);
+		}else{
+			switch(a.type){
+				case Attribute::TYPE::FLOAT:{
+					return 0;
+				}break;
+				case Attribute::TYPE::INT:{
+					return 0;
+				}break;
+				case Attribute::TYPE::STRING:{
+					return "";
+				}break;
+				case Attribute::TYPE::BOOL:{
+					return false;
+				}break;
+			}
+		}
+	}
 private:
 	struct STRATEGY{
 		static int _GetInt(Monster&m,std::string param,int strategyNumber,int index=0);
diff --git a/Crawler/MonsterAttribute.h b/Crawler/MonsterAttribute.h
new file mode 100644
index 00000000..e6d62fbb
--- /dev/null
+++ b/Crawler/MonsterAttribute.h
@@ -0,0 +1,20 @@
+#define VARIANTS float,int,std::string,bool
+#define CREATE_ATTRIBUTE(variable,type) _ATTRIBUTE variable{Attribute::TYPE::type};
+
+namespace Attribute{
+    enum class TYPE{
+        FLOAT,
+        INT,
+        STRING,
+        BOOL,
+    };
+}
+
+struct _ATTRIBUTE{
+    Attribute::TYPE type;
+};
+
+namespace Attribute{
+    CREATE_ATTRIBUTE(IFRAME_TIME_UPON_HIT,FLOAT);
+    CREATE_ATTRIBUTE(SHOOT_RING_TIMER,FLOAT);
+}
\ No newline at end of file
diff --git a/Crawler/SlimeKing.cpp b/Crawler/SlimeKing.cpp
index 153f9a52..14278ed4 100644
--- a/Crawler/SlimeKing.cpp
+++ b/Crawler/SlimeKing.cpp
@@ -12,7 +12,8 @@ void Monster::STRATEGY::SLIMEKING(Monster&m,float fElapsedTime,int strategyNumbe
 		case 0:{
 			m.size=ConfigInt("Phase1.Size")/100;
 			m.diesNormally=false;
-			m.iframeTimeUponHit=ConfigFloat("Phase5.IframeTimePerHit");
+			m.Set(Attribute::IFRAME_TIME_UPON_HIT,0);
+			m.iframe_timer=ConfigFloat("Phase5.IframeTimePerHit");
 			m.phase=1;
 		}break;
 		case 1:{
@@ -36,6 +37,7 @@ void Monster::STRATEGY::SLIMEKING(Monster&m,float fElapsedTime,int strategyNumbe
 		case 4:{
 			if(m.hp<=0){
 				m.phase=5;
+				m.Set(Attribute::IFRAME_TIME_UPON_HIT,1);
 			}
 		}break;
 	}