Heartstone Tweet NM-Mint, English, limit 4 CAD$ 1.67 / CAD$ 2.09 credit Buy This Product 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: Stronghold