diff --git a/src/main/java/WayofTime/bloodmagic/livingArmour/downgrade/LivingArmourUpgradeCrippledArm.java b/src/main/java/WayofTime/bloodmagic/livingArmour/downgrade/LivingArmourUpgradeCrippledArm.java
new file mode 100644
index 00000000..0ce820e5
--- /dev/null
+++ b/src/main/java/WayofTime/bloodmagic/livingArmour/downgrade/LivingArmourUpgradeCrippledArm.java
@@ -0,0 +1,58 @@
+package WayofTime.bloodmagic.livingArmour.downgrade;
+
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.nbt.NBTTagCompound;
+import net.minecraft.world.World;
+import WayofTime.bloodmagic.api.Constants;
+import WayofTime.bloodmagic.api.livingArmour.ILivingArmour;
+import WayofTime.bloodmagic.api.livingArmour.LivingArmourUpgrade;
+
+public class LivingArmourUpgradeCrippledArm extends LivingArmourUpgrade
+{
+    public static final int[] costs = new int[] { -50 };
+
+    public LivingArmourUpgradeCrippledArm(int level)
+    {
+        super(level);
+    }
+
+    @Override
+    public void onTick(World world, EntityPlayer player, ILivingArmour livingArmour)
+    {
+
+    }
+
+    @Override
+    public String getUniqueIdentifier()
+    {
+        return Constants.Mod.MODID + ".upgrade.crippledArm";
+    }
+
+    @Override
+    public int getMaxTier()
+    {
+        return 1;
+    }
+
+    @Override
+    public int getCostOfUpgrade()
+    {
+        return costs[this.level];
+    }
+
+    @Override
+    public void writeToNBT(NBTTagCompound tag)
+    {
+    }
+
+    @Override
+    public void readFromNBT(NBTTagCompound tag)
+    {
+    }
+
+    @Override
+    public String getUnlocalizedName()
+    {
+        return tooltipBase + "crippledArm";
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/WayofTime/bloodmagic/livingArmour/upgrade/LivingArmourUpgradeSlowness.java b/src/main/java/WayofTime/bloodmagic/livingArmour/downgrade/LivingArmourUpgradeSlowness.java
similarity index 96%
rename from src/main/java/WayofTime/bloodmagic/livingArmour/upgrade/LivingArmourUpgradeSlowness.java
rename to src/main/java/WayofTime/bloodmagic/livingArmour/downgrade/LivingArmourUpgradeSlowness.java
index 1eb04563..14e41fe1 100644
--- a/src/main/java/WayofTime/bloodmagic/livingArmour/upgrade/LivingArmourUpgradeSlowness.java
+++ b/src/main/java/WayofTime/bloodmagic/livingArmour/downgrade/LivingArmourUpgradeSlowness.java
@@ -1,4 +1,4 @@
-package WayofTime.bloodmagic.livingArmour.upgrade;
+package WayofTime.bloodmagic.livingArmour.downgrade;
 
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.init.MobEffects;
diff --git a/src/main/java/WayofTime/bloodmagic/registry/ModArmourTrackers.java b/src/main/java/WayofTime/bloodmagic/registry/ModArmourTrackers.java
index d2ff7ac6..b2e67e98 100644
--- a/src/main/java/WayofTime/bloodmagic/registry/ModArmourTrackers.java
+++ b/src/main/java/WayofTime/bloodmagic/registry/ModArmourTrackers.java
@@ -1,6 +1,8 @@
 package WayofTime.bloodmagic.registry;
 
 import WayofTime.bloodmagic.api.livingArmour.LivingArmourHandler;
+import WayofTime.bloodmagic.livingArmour.downgrade.LivingArmourUpgradeCrippledArm;
+import WayofTime.bloodmagic.livingArmour.downgrade.LivingArmourUpgradeSlowness;
 import WayofTime.bloodmagic.livingArmour.tracker.StatTrackerArrowShot;
 import WayofTime.bloodmagic.livingArmour.tracker.StatTrackerCriticalStrike;
 import WayofTime.bloodmagic.livingArmour.tracker.StatTrackerDigging;
@@ -36,7 +38,6 @@ import WayofTime.bloodmagic.livingArmour.upgrade.LivingArmourUpgradeMeleeDamage;
 import WayofTime.bloodmagic.livingArmour.upgrade.LivingArmourUpgradePhysicalProtect;
 import WayofTime.bloodmagic.livingArmour.upgrade.LivingArmourUpgradePoisonResist;
 import WayofTime.bloodmagic.livingArmour.upgrade.LivingArmourUpgradeSelfSacrifice;
-import WayofTime.bloodmagic.livingArmour.upgrade.LivingArmourUpgradeSlowness;
 import WayofTime.bloodmagic.livingArmour.upgrade.LivingArmourUpgradeSolarPowered;
 import WayofTime.bloodmagic.livingArmour.upgrade.LivingArmourUpgradeSpeed;
 import WayofTime.bloodmagic.livingArmour.upgrade.LivingArmourUpgradeSprintAttack;
@@ -87,5 +88,6 @@ public class ModArmourTrackers
         LivingArmourHandler.registerArmourUpgrade(new LivingArmourUpgradeElytra(0));
         LivingArmourHandler.registerArmourUpgrade(new LivingArmourUpgradeFireResist(0));
         LivingArmourHandler.registerArmourUpgrade(new LivingArmourUpgradeSlowness(0));
+        LivingArmourHandler.registerArmourUpgrade(new LivingArmourUpgradeCrippledArm(0));
     }
 }
diff --git a/src/main/java/WayofTime/bloodmagic/util/handler/event/LivingArmourHandler.java b/src/main/java/WayofTime/bloodmagic/util/handler/event/LivingArmourHandler.java
index cb17c346..0ebc1f43 100644
--- a/src/main/java/WayofTime/bloodmagic/util/handler/event/LivingArmourHandler.java
+++ b/src/main/java/WayofTime/bloodmagic/util/handler/event/LivingArmourHandler.java
@@ -1,15 +1,5 @@
 package WayofTime.bloodmagic.util.handler.event;
 
-import WayofTime.bloodmagic.annot.Handler;
-import WayofTime.bloodmagic.api.Constants;
-import WayofTime.bloodmagic.api.livingArmour.LivingArmourUpgrade;
-import WayofTime.bloodmagic.item.armour.ItemLivingArmour;
-import WayofTime.bloodmagic.livingArmour.LivingArmour;
-import WayofTime.bloodmagic.livingArmour.tracker.StatTrackerArrowShot;
-import WayofTime.bloodmagic.livingArmour.tracker.StatTrackerGrimReaperSprint;
-import WayofTime.bloodmagic.livingArmour.tracker.StatTrackerJump;
-import WayofTime.bloodmagic.livingArmour.upgrade.*;
-import WayofTime.bloodmagic.registry.ModPotions;
 import net.minecraft.enchantment.EnchantmentHelper;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.entity.projectile.EntityArrow;
@@ -18,17 +8,57 @@ import net.minecraft.init.Items;
 import net.minecraft.inventory.EntityEquipmentSlot;
 import net.minecraft.item.ItemArrow;
 import net.minecraft.item.ItemStack;
+import net.minecraft.util.EnumHand;
 import net.minecraft.world.World;
 import net.minecraftforge.event.entity.living.LivingDeathEvent;
 import net.minecraftforge.event.entity.living.LivingEvent;
 import net.minecraftforge.event.entity.player.ArrowLooseEvent;
+import net.minecraftforge.event.entity.player.PlayerInteractEvent;
 import net.minecraftforge.fml.common.eventhandler.Event;
 import net.minecraftforge.fml.common.eventhandler.EventPriority;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
+import WayofTime.bloodmagic.annot.Handler;
+import WayofTime.bloodmagic.api.Constants;
+import WayofTime.bloodmagic.api.livingArmour.LivingArmourUpgrade;
+import WayofTime.bloodmagic.item.armour.ItemLivingArmour;
+import WayofTime.bloodmagic.livingArmour.LivingArmour;
+import WayofTime.bloodmagic.livingArmour.downgrade.LivingArmourUpgradeCrippledArm;
+import WayofTime.bloodmagic.livingArmour.tracker.StatTrackerArrowShot;
+import WayofTime.bloodmagic.livingArmour.tracker.StatTrackerGrimReaperSprint;
+import WayofTime.bloodmagic.livingArmour.tracker.StatTrackerJump;
+import WayofTime.bloodmagic.livingArmour.upgrade.LivingArmourUpgradeArrowShot;
+import WayofTime.bloodmagic.livingArmour.upgrade.LivingArmourUpgradeGrimReaperSprint;
+import WayofTime.bloodmagic.livingArmour.upgrade.LivingArmourUpgradeJump;
+import WayofTime.bloodmagic.livingArmour.upgrade.LivingArmourUpgradeSpeed;
+import WayofTime.bloodmagic.livingArmour.upgrade.LivingArmourUpgradeStepAssist;
+import WayofTime.bloodmagic.registry.ModPotions;
 
 @Handler
 public class LivingArmourHandler
 {
+    @SubscribeEvent
+    public void onPlayerClick(PlayerInteractEvent event)
+    {
+        if (event.isCancelable() && event.getHand() == EnumHand.OFF_HAND)
+        {
+            EntityPlayer player = event.getEntityPlayer();
+
+            if (LivingArmour.hasFullSet(player))
+            {
+                ItemStack chestStack = player.getItemStackFromSlot(EntityEquipmentSlot.CHEST);
+                LivingArmour armour = ItemLivingArmour.getLivingArmour(chestStack);
+                if (armour != null)
+                {
+                    LivingArmourUpgrade upgrade = ItemLivingArmour.getUpgrade(Constants.Mod.MODID + ".upgrade.crippledArm", chestStack);
+
+                    if (upgrade instanceof LivingArmourUpgradeCrippledArm)
+                    {
+                        event.setCanceled(true);
+                    }
+                }
+            }
+        }
+    }
 
     // Applies: Grim Reaper
     @SubscribeEvent(priority = EventPriority.HIGHEST)
diff --git a/src/main/resources/assets/bloodmagic/lang/en_US.lang b/src/main/resources/assets/bloodmagic/lang/en_US.lang
index 07323055..deaf97e2 100644
--- a/src/main/resources/assets/bloodmagic/lang/en_US.lang
+++ b/src/main/resources/assets/bloodmagic/lang/en_US.lang
@@ -367,6 +367,7 @@ tooltip.BloodMagic.livingArmour.upgrade.sprintAttack=Charging Strike
 tooltip.BloodMagic.livingArmour.upgrade.criticalStrike=True Strike
 tooltip.BloodMagic.livingArmour.upgrade.elytra=Elytra
 tooltip.BloodMagic.livingArmour.upgrade.slowness=Limp Leg
+tooltip.BloodMagic.livingArmour.upgrade.crippledArm=Crippled Arm
 tooltip.BloodMagic.livingArmour.upgrade.level=%s (Level %d)
 tooltip.BloodMagic.livingArmour.upgrade.points=&6Upgrade points: %s / %s