Put 3 counters on this card when you Normal Summon it. This card is not destroyed as a result of battle. If this card battles a monster, remove 1 counter from this card at the end of the Damage Step. If this card battles without a counter, destroy this card at the end of the Damage Step. Once per turn, during your Main Phase, you can change 1 face-up Attack Position monster on your opponent''s side of the field to face-up Defense Position.
![B.E.S. Crystal Core [CRV-EN021] Ultimate Rare | Black Swamp Games](http://blackswampgames.com/cdn/shop/products/2f3e21a5-f8d9-5ebe-99a3-c32a1b671c91.jpg?v=1643071723)
