diff --git a/Common/src/main/java/at/petrak/hexcasting/api/casting/eval/env/PlayerBasedCastEnv.java b/Common/src/main/java/at/petrak/hexcasting/api/casting/eval/env/PlayerBasedCastEnv.java
index 750a48fa2..83e58a818 100644
--- a/Common/src/main/java/at/petrak/hexcasting/api/casting/eval/env/PlayerBasedCastEnv.java
+++ b/Common/src/main/java/at/petrak/hexcasting/api/casting/eval/env/PlayerBasedCastEnv.java
@@ -147,6 +147,9 @@ protected long extractMediaFromInventory(long costLeft, boolean allowOvercast, b
             double healthToRemove = Math.max(costLeft / mediaToHealth, 0.5);
             if (simulate) {
                 long simulatedRemovedMedia = Mth.ceil(Math.min(this.caster.getHealth(), healthToRemove) * mediaToHealth);
+                if (this.caster.isInvulnerableTo(this.caster.damageSources().source(HexDamageTypes.OVERCAST))) {
+                    simulatedRemovedMedia = 0;
+                }
                 costLeft -= simulatedRemovedMedia;
             } else {
                 var mediaAbleToCastFromHP = this.caster.getHealth() * mediaToHealth;