diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/effects/SpellSprite.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/effects/SpellSprite.java
index 06022d4f6..24bd75ae1 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/effects/SpellSprite.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/effects/SpellSprite.java
@@ -80,8 +80,10 @@ public class SpellSprite extends Image {
 	public void update() {
 		super.update();
 		
-		x = target.sprite.center().x - SIZE / 2;
-		y = target.sprite.y - SIZE;
+		if (target.sprite != null) {
+			x = target.sprite.center().x - SIZE / 2;
+			y = target.sprite.y - SIZE;
+		}
 		
 		switch (phase) {
 		case FADE_IN:
diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/armor/MageArmor.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/armor/MageArmor.java
index 207fc452d..72aef6bbc 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/armor/MageArmor.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/armor/MageArmor.java
@@ -41,7 +41,7 @@ public class MageArmor extends ClassArmor {
 	@Override
 	public void doSpecial() {
 		
-		for (Mob mob : Dungeon.level.mobs) {
+		for (Mob mob : Dungeon.level.mobs.toArray(new Mob[0])) {
 			if (Dungeon.level.heroFOV[mob.pos]) {
 				Buff.affect( mob, Burning.class ).reignite( mob );
 				Buff.prolong( mob, Roots.class, 3 );