diff --git a/src/main/java/electroblob/wizardry/client/renderer/overlay/RenderSixthSense.java b/src/main/java/electroblob/wizardry/client/renderer/overlay/RenderSixthSense.java
index ecb9aaa3..68c1194c 100644
--- a/src/main/java/electroblob/wizardry/client/renderer/overlay/RenderSixthSense.java
+++ b/src/main/java/electroblob/wizardry/client/renderer/overlay/RenderSixthSense.java
@@ -60,10 +60,12 @@ public class RenderSixthSense {
 
 		Minecraft mc = Minecraft.getMinecraft();
 		RenderManager renderManager = event.getRenderer().getRenderManager();
+		float effectRadius = Spells.sixth_sense.getProperty(Spell.EFFECT_RADIUS).floatValue();
+		float distance = event.getEntity().getDistance(mc.player);
 
 		if(mc.player.isPotionActive(WizardryPotions.sixth_sense) && !(event.getEntity() instanceof EntityArmorStand)
 				&& event.getEntity() != mc.player && mc.player.getActivePotionEffect(WizardryPotions.sixth_sense) != null
-				&& event.getEntity().getDistance(mc.player) < Spells.sixth_sense.getProperty(Spell.EFFECT_RADIUS).floatValue()
+				&& distance < effectRadius
 				* (1 + mc.player.getActivePotionEffect(WizardryPotions.sixth_sense).getAmplifier() * Constants.RANGE_INCREASE_PER_LEVEL)){
 
 			Tessellator tessellator = Tessellator.getInstance();
@@ -87,7 +89,13 @@ public class RenderSixthSense {
 			GlStateManager.rotate(180 - renderManager.playerViewY, 0.0F, 1.0F, 0.0F);
 			GlStateManager.rotate(yaw, 1.0F, 0.0F, 0.0F);
 
-			GlStateManager.color(1, 1, 1, 1);
+			//Decreases the opacity of the marker after 80% of the effect distance
+			float alpha = 1f;
+			float f = 5 * (1f - distance / effectRadius);
+			if (f <= 1) {
+				alpha = f;
+			}
+			GlStateManager.color(1, 1, 1, alpha);
 
 			ResourceLocation texture = PASSIVE_MOB_MARKER_TEXTURE;
 
diff --git a/src/main/java/electroblob/wizardry/constants/Constants.java b/src/main/java/electroblob/wizardry/constants/Constants.java
index 0a6d922e..aab2b8b0 100644
--- a/src/main/java/electroblob/wizardry/constants/Constants.java
+++ b/src/main/java/electroblob/wizardry/constants/Constants.java
@@ -30,7 +30,7 @@ public final class Constants {
 	/** The fraction by which spell blast radius is increased for each level of range upgrade. */
 	public static float BLAST_RADIUS_INCREASE_PER_LEVEL = 0.25f;
 	/** The fraction by which movement speed is reduced per level of frost effect. */
-	public static final double FROST_SLOWNESS_PER_LEVEL = 0.5;
+	public static double FROST_SLOWNESS_PER_LEVEL = 0.5;
 	/** The fraction by which movement speed is reduced per level of decay effect. */
 	public static final double DECAY_SLOWNESS_PER_LEVEL = 0.2;
 	/** The fraction by which dig speed is reduced per level of frostbite effect. */
@@ -56,6 +56,6 @@ public final class Constants {
 		DURATION_INCREASE_PER_LEVEL = (float) Wizardry.settings.durationIncreasePerLevel;
 		RANGE_INCREASE_PER_LEVEL = (float) Wizardry.settings.rangeIncreasePerLevel;
 		BLAST_RADIUS_INCREASE_PER_LEVEL = (float) Wizardry.settings.blastIncreasePerLevel;
-		RANGE_INCREASE_PER_LEVEL = (float) Wizardry.settings.frostSlownessIncreasePerLevel;
+		FROST_SLOWNESS_PER_LEVEL = (float) Wizardry.settings.frostSlownessIncreasePerLevel;
 	}
 }
diff --git a/src/main/java/electroblob/wizardry/item/ItemWand.java b/src/main/java/electroblob/wizardry/item/ItemWand.java
index f80b0b71..631b7173 100644
--- a/src/main/java/electroblob/wizardry/item/ItemWand.java
+++ b/src/main/java/electroblob/wizardry/item/ItemWand.java
@@ -735,7 +735,7 @@ public class ItemWand extends Item implements IWorkbenchItem, ISpellCastingItem,
 			Item specialUpgrade = upgrade.getItem();
 
 			int maxUpgrades = this.tier.upgradeLimit;
-			if(this.element == Element.MAGIC) maxUpgrades += Constants.NON_ELEMENTAL_UPGRADE_BONUS;
+			if(this.element == null) maxUpgrades += Constants.NON_ELEMENTAL_UPGRADE_BONUS;
 
 			if(WandHelper.getTotalUpgrades(wand) < maxUpgrades
 					&& WandHelper.getUpgradeLevel(wand, specialUpgrade) < Constants.UPGRADE_STACK_LIMIT){
diff --git a/src/main/java/electroblob/wizardry/registry/WizardryPotions.java b/src/main/java/electroblob/wizardry/registry/WizardryPotions.java
index a4fd9662..fdc13cc4 100644
--- a/src/main/java/electroblob/wizardry/registry/WizardryPotions.java
+++ b/src/main/java/electroblob/wizardry/registry/WizardryPotions.java
@@ -130,17 +130,7 @@ public final class WizardryPotions {
 		registerPotion(registry, "decay", new PotionDecay(true, 0x3c006c));
 
 		registerPotion(registry, "sixth_sense", new PotionMagicEffect(false, 0xc6ff01,
-				new ResourceLocation(Wizardry.MODID, "textures/gui/potion_icons/sixth_sense.png")){
-			@Override
-			public void performEffect(EntityLivingBase target, int strength){
-				// Reset the shader (a bit dirty but both the potion expiry hooks are only fired server-side, and
-				// there's no point sending packets unnecessarily if we can just do this instead)
-				if(target.getActivePotionEffect(this).getDuration() <= 1 && target.world.isRemote
-						&& target == net.minecraft.client.Minecraft.getMinecraft().player){
-					net.minecraft.client.Minecraft.getMinecraft().entityRenderer.stopUseShader();
-				}
-			}
-		}.setBeneficial());
+				new ResourceLocation(Wizardry.MODID, "textures/gui/potion_icons/sixth_sense.png")).setBeneficial());
 
 		registerPotion(registry, "arcane_jammer", new PotionMagicEffect(true, 0xcf4aa2,
 				new ResourceLocation(Wizardry.MODID, "textures/gui/potion_icons/arcane_jammer.png")));