Heartstone
Artifact
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, *Weatherlight* navigator
Illustrated by John Matson
Formats
Not Legalstandard
Not Legalhistoric
Not Legaltimeless
Not Legalpioneer
Not Legalmodern
Legallegacy
Not Legalpauper
Legalvintage
Not Legalpenny
Legalcommander
Legaloathbreaker
Not Legalbrawl
Not Legalalchemy
This printing
Prices
USD$2.30
EUR€1.38
Rulings (5)
It will never reduce any colored mana portion of an activation cost.
It will not add a
to abilities with no generic mana in their activation cost.The cost reduction can be applied to additional costs.
Can’t reduce Snow mana costs.
Activated abilities contain a colon. They’re generally written “[Cost]: [Effect].” Some keywords are activated abilities and will have colons in their reminder text.
