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Activated abilities of creatures cost {1} less to activate. This effect can't reduce the mana in that cost to less than one mana.
Abilities, attacks, weakness & resistance
Other cards from Premium Deck Series: Slivers
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Heartstone (H09-26 foil) is an uncommon artifact from the Premium Deck Series: Slivers. It reduces activated abilities of creatures by {1}, though it cannot reduce those costs below one mana and won’t reduce colored or snow portions of costs. The card supports decks that rely on many creature activated abilities by lowering their activation tax and can interact with additional costs but won’t make zero-cost activations.
Catalog pricing data as of 28 Apr 2026, 07:39
