diff --git a/L2J_Mobius_1.0_Ertheia/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java b/L2J_Mobius_1.0_Ertheia/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
index d0c2171eab..d827eefcf4 100644
--- a/L2J_Mobius_1.0_Ertheia/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
+++ b/L2J_Mobius_1.0_Ertheia/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
@@ -189,7 +189,10 @@ public class CubicInstance
 					final L2Character target = stream.sorted(Comparator.comparingInt(L2Character::getCurrentHpPercent)).findFirst().orElse(null);
 					if (target != null)
 					{
-						activateCubicSkill(skill, target);
+						if (Rnd.nextDouble() > (target.getCurrentHp() / target.getMaxHp()))
+						{
+							activateCubicSkill(skill, target);
+						}
 						break;
 					}
 				}
diff --git a/L2J_Mobius_2.5_Underground/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java b/L2J_Mobius_2.5_Underground/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
index d0c2171eab..d827eefcf4 100644
--- a/L2J_Mobius_2.5_Underground/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
+++ b/L2J_Mobius_2.5_Underground/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
@@ -189,7 +189,10 @@ public class CubicInstance
 					final L2Character target = stream.sorted(Comparator.comparingInt(L2Character::getCurrentHpPercent)).findFirst().orElse(null);
 					if (target != null)
 					{
-						activateCubicSkill(skill, target);
+						if (Rnd.nextDouble() > (target.getCurrentHp() / target.getMaxHp()))
+						{
+							activateCubicSkill(skill, target);
+						}
 						break;
 					}
 				}
diff --git a/L2J_Mobius_3.0_Helios/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java b/L2J_Mobius_3.0_Helios/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
index d0c2171eab..d827eefcf4 100644
--- a/L2J_Mobius_3.0_Helios/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
+++ b/L2J_Mobius_3.0_Helios/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
@@ -189,7 +189,10 @@ public class CubicInstance
 					final L2Character target = stream.sorted(Comparator.comparingInt(L2Character::getCurrentHpPercent)).findFirst().orElse(null);
 					if (target != null)
 					{
-						activateCubicSkill(skill, target);
+						if (Rnd.nextDouble() > (target.getCurrentHp() / target.getMaxHp()))
+						{
+							activateCubicSkill(skill, target);
+						}
 						break;
 					}
 				}
diff --git a/L2J_Mobius_4.0_GrandCrusade/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java b/L2J_Mobius_4.0_GrandCrusade/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
index d0c2171eab..d827eefcf4 100644
--- a/L2J_Mobius_4.0_GrandCrusade/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
+++ b/L2J_Mobius_4.0_GrandCrusade/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
@@ -189,7 +189,10 @@ public class CubicInstance
 					final L2Character target = stream.sorted(Comparator.comparingInt(L2Character::getCurrentHpPercent)).findFirst().orElse(null);
 					if (target != null)
 					{
-						activateCubicSkill(skill, target);
+						if (Rnd.nextDouble() > (target.getCurrentHp() / target.getMaxHp()))
+						{
+							activateCubicSkill(skill, target);
+						}
 						break;
 					}
 				}
diff --git a/L2J_Mobius_5.0_Salvation/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java b/L2J_Mobius_5.0_Salvation/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
index d0c2171eab..d827eefcf4 100644
--- a/L2J_Mobius_5.0_Salvation/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
+++ b/L2J_Mobius_5.0_Salvation/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
@@ -189,7 +189,10 @@ public class CubicInstance
 					final L2Character target = stream.sorted(Comparator.comparingInt(L2Character::getCurrentHpPercent)).findFirst().orElse(null);
 					if (target != null)
 					{
-						activateCubicSkill(skill, target);
+						if (Rnd.nextDouble() > (target.getCurrentHp() / target.getMaxHp()))
+						{
+							activateCubicSkill(skill, target);
+						}
 						break;
 					}
 				}
diff --git a/L2J_Mobius_5.5_EtinasFate/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java b/L2J_Mobius_5.5_EtinasFate/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
index d0c2171eab..d827eefcf4 100644
--- a/L2J_Mobius_5.5_EtinasFate/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
+++ b/L2J_Mobius_5.5_EtinasFate/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
@@ -189,7 +189,10 @@ public class CubicInstance
 					final L2Character target = stream.sorted(Comparator.comparingInt(L2Character::getCurrentHpPercent)).findFirst().orElse(null);
 					if (target != null)
 					{
-						activateCubicSkill(skill, target);
+						if (Rnd.nextDouble() > (target.getCurrentHp() / target.getMaxHp()))
+						{
+							activateCubicSkill(skill, target);
+						}
 						break;
 					}
 				}
diff --git a/L2J_Mobius_Classic_2.0_Saviors/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java b/L2J_Mobius_Classic_2.0_Saviors/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
index d0c2171eab..d827eefcf4 100644
--- a/L2J_Mobius_Classic_2.0_Saviors/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
+++ b/L2J_Mobius_Classic_2.0_Saviors/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
@@ -189,7 +189,10 @@ public class CubicInstance
 					final L2Character target = stream.sorted(Comparator.comparingInt(L2Character::getCurrentHpPercent)).findFirst().orElse(null);
 					if (target != null)
 					{
-						activateCubicSkill(skill, target);
+						if (Rnd.nextDouble() > (target.getCurrentHp() / target.getMaxHp()))
+						{
+							activateCubicSkill(skill, target);
+						}
 						break;
 					}
 				}
diff --git a/L2J_Mobius_Classic_2.1_Zaken/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java b/L2J_Mobius_Classic_2.1_Zaken/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
index d0c2171eab..d827eefcf4 100644
--- a/L2J_Mobius_Classic_2.1_Zaken/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
+++ b/L2J_Mobius_Classic_2.1_Zaken/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
@@ -189,7 +189,10 @@ public class CubicInstance
 					final L2Character target = stream.sorted(Comparator.comparingInt(L2Character::getCurrentHpPercent)).findFirst().orElse(null);
 					if (target != null)
 					{
-						activateCubicSkill(skill, target);
+						if (Rnd.nextDouble() > (target.getCurrentHp() / target.getMaxHp()))
+						{
+							activateCubicSkill(skill, target);
+						}
 						break;
 					}
 				}
diff --git a/L2J_Mobius_Classic_2.2_Antharas/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java b/L2J_Mobius_Classic_2.2_Antharas/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
index d0c2171eab..d827eefcf4 100644
--- a/L2J_Mobius_Classic_2.2_Antharas/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
+++ b/L2J_Mobius_Classic_2.2_Antharas/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
@@ -189,7 +189,10 @@ public class CubicInstance
 					final L2Character target = stream.sorted(Comparator.comparingInt(L2Character::getCurrentHpPercent)).findFirst().orElse(null);
 					if (target != null)
 					{
-						activateCubicSkill(skill, target);
+						if (Rnd.nextDouble() > (target.getCurrentHp() / target.getMaxHp()))
+						{
+							activateCubicSkill(skill, target);
+						}
 						break;
 					}
 				}
diff --git a/L2J_Mobius_Classic_2.3_SevenSigns/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java b/L2J_Mobius_Classic_2.3_SevenSigns/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
index d0c2171eab..d827eefcf4 100644
--- a/L2J_Mobius_Classic_2.3_SevenSigns/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
+++ b/L2J_Mobius_Classic_2.3_SevenSigns/java/com/l2jmobius/gameserver/model/cubic/CubicInstance.java
@@ -189,7 +189,10 @@ public class CubicInstance
 					final L2Character target = stream.sorted(Comparator.comparingInt(L2Character::getCurrentHpPercent)).findFirst().orElse(null);
 					if (target != null)
 					{
-						activateCubicSkill(skill, target);
+						if (Rnd.nextDouble() > (target.getCurrentHp() / target.getMaxHp()))
+						{
+							activateCubicSkill(skill, target);
+						}
 						break;
 					}
 				}