name=Heartstone
image=https://magiccards.info/scans/en/sh/128.jpg
value=3.909
rarity=U
type=Artifact
cost={3}
ability=Activated abilities of creatures cost {1} less to activate. This effect can't reduce the amount of mana an ability costs to activate to less than one mana.
timing=artifact
oracle=Activated abilities of creatures cost {1} less to activate. This effect can't reduce the amount of mana an ability costs to activate to less than one mana.
status=not supported: complex-cost-modification
