diff --git a/L2J_Mobius_CT_0_Interlude/dist/game/data/stats/skills/04200-04299.xml b/L2J_Mobius_CT_0_Interlude/dist/game/data/stats/skills/04200-04299.xml
index 126fbe7a50..1dcdbfc508 100644
--- a/L2J_Mobius_CT_0_Interlude/dist/game/data/stats/skills/04200-04299.xml
+++ b/L2J_Mobius_CT_0_Interlude/dist/game/data/stats/skills/04200-04299.xml
@@ -1290,13 +1290,27 @@
 			</effect>
 		</for>
 	</skill>
-	<skill id="4267" levels="1" name="Grade Penalty">
+	<skill id="4267" levels="10" name="Grade Penalty">
 		<!-- A penalty applied when the grade of equipment one is wearing is not appropriate for one's level. -->
 		<set name="icon" val="icon.skill4267" />
+		<table name="#rate">0.22 0.19 0.16 0.13 0.1 0.1 0.1 0.1 0.1 0.1</table>
 		<set name="magicLevel" val="1" />
 		<set name="operateType" val="P" />
 		<set name="stayAfterDeath" val="true" />
 		<set name="targetType" val="SELF" />
+		<for>
+			<effect name="Buff">
+				<mul stat="pAtkSpd" val="#rate" />
+				<mul stat="mAtkSpd" val="#rate" />
+				<mul stat="rEvas" val="#rate" />
+				<mul stat="rExp" val="#rate" />
+				<mul stat="runSpd" val="#rate" />
+				<mul stat="regHp" val="#rate" />
+				<mul stat="regCp" val="#rate" />
+				<mul stat="regMp" val="#rate" />
+				<sub stat="accCombat" val="20" />
+			</effect>
+		</for>
 	</skill>
 	<skill id="4268" levels="1" name="Danger Area">
 		<!-- You are located in an area in which you can can receive environmental damage or penalty. -->
diff --git a/L2J_Mobius_CT_0_Interlude/java/org/l2jmobius/gameserver/model/actor/Player.java b/L2J_Mobius_CT_0_Interlude/java/org/l2jmobius/gameserver/model/actor/Player.java
index 6e589f23b7..2716ecfa54 100644
--- a/L2J_Mobius_CT_0_Interlude/java/org/l2jmobius/gameserver/model/actor/Player.java
+++ b/L2J_Mobius_CT_0_Interlude/java/org/l2jmobius/gameserver/model/actor/Player.java
@@ -2026,44 +2026,27 @@ public class Player extends Playable
 			}
 		}
 		
-		boolean changed = false;
-		
 		// calc weapon penalty
 		weaponPenalty = weaponPenalty - expertiseLevel - _expertisePenaltyBonus;
 		weaponPenalty = Math.min(Math.max(weaponPenalty, 0), 4);
-		if ((_expertiseWeaponPenalty != weaponPenalty) || (getSkillLevel(CommonSkill.WEAPON_GRADE_PENALTY.getId()) != weaponPenalty))
-		{
-			_expertiseWeaponPenalty = weaponPenalty;
-			if (_expertiseWeaponPenalty > 0)
-			{
-				addSkill(SkillData.getInstance().getSkill(CommonSkill.WEAPON_GRADE_PENALTY.getId(), _expertiseWeaponPenalty));
-			}
-			else
-			{
-				removeSkill(getKnownSkill(CommonSkill.WEAPON_GRADE_PENALTY.getId()), false, true);
-			}
-			changed = true;
-		}
 		
 		// calc armor penalty
 		armorPenalty = armorPenalty - expertiseLevel - _expertisePenaltyBonus;
 		armorPenalty = Math.min(Math.max(armorPenalty, 0), 4);
-		if ((_expertiseArmorPenalty != armorPenalty) || (getSkillLevel(CommonSkill.ARMOR_GRADE_PENALTY.getId()) != armorPenalty))
+		
+		if ((_expertiseWeaponPenalty != weaponPenalty) || (_expertiseArmorPenalty != armorPenalty))
 		{
+			_expertiseWeaponPenalty = weaponPenalty;
 			_expertiseArmorPenalty = armorPenalty;
-			if (_expertiseArmorPenalty > 0)
+			if ((_expertiseWeaponPenalty > 0) || (_expertiseArmorPenalty > 0))
 			{
-				addSkill(SkillData.getInstance().getSkill(CommonSkill.ARMOR_GRADE_PENALTY.getId(), _expertiseArmorPenalty));
+				addSkill(SkillData.getInstance().getSkill(CommonSkill.GRADE_PENALTY.getId(), Math.max(weaponPenalty, armorPenalty)));
 			}
 			else
 			{
-				removeSkill(getKnownSkill(CommonSkill.ARMOR_GRADE_PENALTY.getId()), false, true);
+				removeSkill(getKnownSkill(CommonSkill.GRADE_PENALTY.getId()), false, true);
 			}
-			changed = true;
-		}
-		
-		if (changed)
-		{
+			
 			sendPacket(new EtcStatusUpdate(this));
 		}
 	}
diff --git a/L2J_Mobius_CT_0_Interlude/java/org/l2jmobius/gameserver/model/skill/CommonSkill.java b/L2J_Mobius_CT_0_Interlude/java/org/l2jmobius/gameserver/model/skill/CommonSkill.java
index 28565d76d9..a526b69e93 100644
--- a/L2J_Mobius_CT_0_Interlude/java/org/l2jmobius/gameserver/model/skill/CommonSkill.java
+++ b/L2J_Mobius_CT_0_Interlude/java/org/l2jmobius/gameserver/model/skill/CommonSkill.java
@@ -30,7 +30,7 @@ public enum CommonSkill
 	BUILD_HEADQUARTERS(247, 1),
 	WYVERN_BREATH(4289, 1),
 	STRIDER_SIEGE_ASSAULT(325, 1),
-	FIREWORK(5965, 1),
+	FIREWORK(2024, 1),
 	LARGE_FIREWORK(2025, 1),
 	BLESSING_OF_PROTECTION(5182, 1),
 	VOID_BURST(3630, 1),
@@ -38,17 +38,13 @@ public enum CommonSkill
 	THE_VICTOR_OF_WAR(5074, 1),
 	THE_VANQUISHED_OF_WAR(5075, 1),
 	SPECIAL_TREE_RECOVERY_BONUS(2139, 1),
-	WEAPON_GRADE_PENALTY(6209, 1),
-	ARMOR_GRADE_PENALTY(6213, 1),
+	GRADE_PENALTY(4267, 1),
 	CREATE_DWARVEN(172, 1),
 	LUCKY(194, 1),
 	EXPERTISE(239, 1),
 	CRYSTALLIZE(248, 1),
-	ONYX_BEAST_TRANSFORMATION(617, 1),
 	CREATE_COMMON(1320, 1),
-	DIVINE_INSPIRATION(1405, 1),
-	SERVITOR_SHARE(1557, 1),
-	CARAVANS_SECRET_MEDICINE(2341, 1);
+	DIVINE_INSPIRATION(1405, 1);
 	
 	private final SkillHolder _holder;
 	
diff --git a/L2J_Mobius_CT_0_Interlude/java/org/l2jmobius/gameserver/model/skill/Skill.java b/L2J_Mobius_CT_0_Interlude/java/org/l2jmobius/gameserver/model/skill/Skill.java
index be8a0beabb..9423dceef2 100644
--- a/L2J_Mobius_CT_0_Interlude/java/org/l2jmobius/gameserver/model/skill/Skill.java
+++ b/L2J_Mobius_CT_0_Interlude/java/org/l2jmobius/gameserver/model/skill/Skill.java
@@ -1496,7 +1496,7 @@ public class Skill implements IIdentifiable
 	 */
 	public boolean canBeStolen()
 	{
-		return !isPassive() && !isToggle() && !_isDebuff && !_isHeroSkill && !_isGMSkill && !(isStatic() && (getId() != CommonSkill.CARAVANS_SECRET_MEDICINE.getId())) && _canBeDispeled && (getId() != CommonSkill.SERVITOR_SHARE.getId());
+		return !isPassive() && !isToggle() && !_isDebuff && !_isHeroSkill && !_isGMSkill && !isStatic() && _canBeDispeled;
 	}
 	
 	public boolean isClanSkill()
diff --git a/L2J_Mobius_CT_0_Interlude/java/org/l2jmobius/gameserver/network/clientpackets/RequestAcquireSkill.java b/L2J_Mobius_CT_0_Interlude/java/org/l2jmobius/gameserver/network/clientpackets/RequestAcquireSkill.java
index 29f8818dfe..655219037d 100644
--- a/L2J_Mobius_CT_0_Interlude/java/org/l2jmobius/gameserver/network/clientpackets/RequestAcquireSkill.java
+++ b/L2J_Mobius_CT_0_Interlude/java/org/l2jmobius/gameserver/network/clientpackets/RequestAcquireSkill.java
@@ -215,14 +215,7 @@ public class RequestAcquireSkill implements IClientIncomingPacket
 				{
 					if (player.getSkillLevel(skill.getSkillId()) < skill.getSkillLevel())
 					{
-						if (skill.getSkillId() == CommonSkill.ONYX_BEAST_TRANSFORMATION.getId())
-						{
-							player.sendPacket(SystemMessageId.YOU_MUST_LEARN_THE_ONYX_BEAST_SKILL_BEFORE_YOU_CAN_ACQUIRE_FURTHER_SKILLS);
-						}
-						else
-						{
-							player.sendPacket(SystemMessageId.YOU_DO_NOT_HAVE_THE_NECESSARY_MATERIALS_OR_PREREQUISITES_TO_LEARN_THIS_SKILL);
-						}
+						player.sendPacket(SystemMessageId.YOU_DO_NOT_HAVE_THE_NECESSARY_MATERIALS_OR_PREREQUISITES_TO_LEARN_THIS_SKILL);
 						return false;
 					}
 				}