Each time a monster effect is activated, place 1 Spellstone Counter on this card (max. 2). While this card has 2 Spellstone Counters, face-up monsters on the field cannot activate their effects, and their effects are negated. During each End Phase, remove all Spellstone Counters on this card.
![Powersink Stone [STBL-EN078] Common | Arkham Games and Comics](http://arkhamgamesandcomics.com/cdn/shop/products/30c947da-5332-520b-84e1-611d48f8a006_d45980c8-3c75-4794-a1fd-6d4ef6980bf6.jpg?v=1706306468)
