diff --git a/src/main/java/com/atsuishio/superbwarfare/event/LivingEventHandler.java b/src/main/java/com/atsuishio/superbwarfare/event/LivingEventHandler.java
index 71f5c98a0..45809347b 100644
--- a/src/main/java/com/atsuishio/superbwarfare/event/LivingEventHandler.java
+++ b/src/main/java/com/atsuishio/superbwarfare/event/LivingEventHandler.java
@@ -782,9 +782,9 @@ public class LivingEventHandler {
         var entity = event.getEntity();
         int level = PerkHelper.getItemPerkLevel(ModPerks.VORPAL_WEAPON.get(), stack);
         if (level <= 0) return;
-        if (entity.getMaxHealth() < 100.0f) return;
+        if (entity.getHealth() < 100.0f) return;
 
-        event.setAmount(event.getAmount() * (1.15f + 0.05f * level));
+        event.setAmount((float) (event.getAmount() + entity.getHealth() * 0.00002f * Math.pow(level,2)));
     }
 
     @SubscribeEvent
diff --git a/src/main/java/com/atsuishio/superbwarfare/tools/CustomExplosion.java b/src/main/java/com/atsuishio/superbwarfare/tools/CustomExplosion.java
index 95ba4d05c..a773d2d06 100644
--- a/src/main/java/com/atsuishio/superbwarfare/tools/CustomExplosion.java
+++ b/src/main/java/com/atsuishio/superbwarfare/tools/CustomExplosion.java
@@ -6,6 +6,7 @@ import com.atsuishio.superbwarfare.config.server.ExplosionDestroyConfig;
 import com.atsuishio.superbwarfare.network.message.ShakeClientMessage;
 import com.google.common.collect.Sets;
 import net.minecraft.core.BlockPos;
+import net.minecraft.server.level.ServerLevel;
 import net.minecraft.server.level.ServerPlayer;
 import net.minecraft.util.Mth;
 import net.minecraft.world.damagesource.DamageSource;
@@ -72,7 +73,9 @@ public class CustomExplosion extends Explosion {
                 ModUtils.PACKET_HANDLER.send(PacketDistributor.PLAYER.with(() -> serverPlayer), new ShakeClientMessage(20 + 0.02 * damage,3 * pRadius,50 + 0.05 * damage, pToBlowX, pToBlowY, pToBlowZ));
             }
         }
-        pLevel.explode(source == null ? null : source.getEntity(), pToBlowX, pToBlowY, pToBlowZ, pRadius / 2, ExplosionDestroyConfig.EXPLOSION_DESTROY.get() ? Level.ExplosionInteraction.BLOCK : Level.ExplosionInteraction.NONE);
+        if (pLevel instanceof ServerLevel) {
+            pLevel.explode(source == null ? null : source.getEntity(), pToBlowX, pToBlowY, pToBlowZ, pRadius / 2, ExplosionDestroyConfig.EXPLOSION_DESTROY.get() ? Level.ExplosionInteraction.BLOCK : Level.ExplosionInteraction.NONE);
+        }
     }
 
     public CustomExplosion(Level pLevel, @Nullable Entity pSource, @Nullable DamageSource source, float damage, double pToBlowX, double pToBlowY, double pToBlowZ, float pRadius) {