Heartstone #134
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$3.42
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Card Details
Activated abilities of creatures cost 
less to activate. This effect can't reduce the mana in that cost to less than one mana.
“"Finding a true heartstone is even harder than finding a true heart." —Hanna”
Illustrated by John Matson
Rulings (5)
Oct 4, 2004
It will never reduce any colored mana portion of an activation cost.
Oct 4, 2004
It will not add a to abilities with no generic mana in their activation cost.
Oct 4, 2004
The cost reduction can be applied to additional costs.
Jul 15, 2006
Can't reduce Snow mana costs.
Jun 8, 2016
Activated abilities contain a colon. They're generally written "[Cost]: [Effect]." Some keywords are activated abilities and will have colons in their reminder text.
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