diff --git a/src/main/java/electroblob/wizardry/block/BlockThorns.java b/src/main/java/electroblob/wizardry/block/BlockThorns.java
index 10b6b821..2a671346 100644
--- a/src/main/java/electroblob/wizardry/block/BlockThorns.java
+++ b/src/main/java/electroblob/wizardry/block/BlockThorns.java
@@ -126,11 +126,14 @@ public class BlockThorns extends BlockBush implements ITileEntityProvider {
 	private static boolean applyThornDamage(World world, BlockPos pos, IBlockState state, Entity target){
 
 		DamageSource source = DamageSource.CACTUS;
+		float damage = Spells.forest_of_thorns.getProperty(Spell.DAMAGE).floatValue();
 
 		TileEntity tileentity = world.getTileEntity(state.getValue(HALF) == EnumBlockHalf.UPPER ? pos.down() : pos);
 
 		if(tileentity instanceof TileEntityThorns){
 
+			damage *= ((TileEntityThorns)tileentity).damageMultiplier;
+
 			EntityLivingBase caster = ((TileEntityThorns)tileentity).getCaster();
 
 			if(!AllyDesignationSystem.isValidTarget(caster, target)) return false; // Don't attack or slow allies of the caster
@@ -141,7 +144,6 @@ public class BlockThorns extends BlockBush implements ITileEntityProvider {
 		}
 
 		if(target.ticksExisted % 20 == 0){
-			float damage = Spells.forest_of_thorns.getProperty(Spell.DAMAGE).floatValue();
 			EntityUtils.attackEntityWithoutKnockback(target, source, damage);
 		}
 
diff --git a/src/main/java/electroblob/wizardry/spell/ForestOfThorns.java b/src/main/java/electroblob/wizardry/spell/ForestOfThorns.java
index daa89c2f..30ae493a 100644
--- a/src/main/java/electroblob/wizardry/spell/ForestOfThorns.java
+++ b/src/main/java/electroblob/wizardry/spell/ForestOfThorns.java
@@ -88,9 +88,9 @@ public class ForestOfThorns extends Spell {
 
 					((TileEntityThorns)tileentity).setLifetime((int)(getProperty(DURATION).floatValue()
 							* modifiers.get(WizardryItems.duration_upgrade)));
-					if(caster != null){
-						((TileEntityThorns)tileentity).setCaster(caster);
-					}
+
+					if(caster != null)((TileEntityThorns)tileentity).setCaster(caster);
+					((TileEntityThorns)tileentity).damageMultiplier = modifiers.get(SpellModifiers.POTENCY);
 
 					((TileEntityThorns)tileentity).sync();
 				}
diff --git a/src/main/java/electroblob/wizardry/tileentity/TileEntityThorns.java b/src/main/java/electroblob/wizardry/tileentity/TileEntityThorns.java
index dbc5416a..614a60b6 100644
--- a/src/main/java/electroblob/wizardry/tileentity/TileEntityThorns.java
+++ b/src/main/java/electroblob/wizardry/tileentity/TileEntityThorns.java
@@ -10,6 +10,8 @@ public class TileEntityThorns extends TileEntityPlayerSave implements ITickable
 	private int lifetime;
 	private int age;
 
+	public float damageMultiplier = 1;
+
 	public TileEntityThorns(){
 		this.lifetime = 600;
 	}
@@ -43,6 +45,7 @@ public class TileEntityThorns extends TileEntityPlayerSave implements ITickable
 		ticksExisted = tagCompound.getInteger("timer");
 		lifetime = tagCompound.getInteger("maxTimer"); // Left as maxTimer for backwards compatibility
 		age = tagCompound.getInteger("age");
+		damageMultiplier = tagCompound.getFloat("damageMultiplier");
 	}
 
 	@Override
@@ -51,6 +54,7 @@ public class TileEntityThorns extends TileEntityPlayerSave implements ITickable
 		tagCompound.setInteger("timer", ticksExisted);
 		tagCompound.setInteger("maxTimer", lifetime);
 		tagCompound.setInteger("age", age);
+		tagCompound.setFloat("damageMultiplier", damageMultiplier);
 		return tagCompound;
 	}