Heartstone - The List Tweet Out of stock. Wishlist Details Color: Artifact Card Text: Creatures' activated abilities cost 1 less to play. If this would make an ability cost 0 or less mana to play, it costs 1, plus any nonmana costs. Rarity: U Cost: 3 Card Type: Artifact Artist: John Matson Name: Heartstone Finish: Regular Card Number: 134/143 Set Name: The List - Stronghold
