Heartstone
Artifact
H09Premium Deck Series: Slivers#26uncommon
"Finding a true heartstone is even harder than finding a true heart." —Hanna, *Weatherlight* navigator
- Finishes
- Foil
- Border
- black
- Frame
- 2003
- Illustrator
- John Matson
CommanderLegalModernNot legalStandardNot legal
Format legality
Constructed
StandardNot legal
PioneerNot legal
ModernNot legal
LegacyLegal
VintageLegal
PauperNot legal
Commander
CommanderLegal
Pauper CommanderNot legal
Duel CommanderLegal
PreDHLegal
OathbreakerLegal
Tiny LeadersLegal
Arena
AlchemyNot legal
HistoricNot legal
TimelessNot legal
BrawlNot legal
Standard BrawlNot legal
Competitive BrawlNot legal
GladiatorNot legal
Other
PremodernLegal
Old SchoolNot legal
Penny DreadfulNot legal
Future StandardNot legal
Activated abilities of creatures cost 
less to activate. This effect can't reduce the mana in that cost to less than one mana.
less to activate. This effect can't reduce the mana in that cost to less than one mana.Plays as:
Ability Cost Reducer
Market · per finishtrend updated 5h ago · prices as of Oct 15, 2026
Price history
last 30 days · set by the window above · each finish on its own scaleFoil$5.86+2.8%30D
30D range$5.70to$6.05Since Feb 2024:H $6.05L $3.37Loading other printings
Found in
1 productRounded oddsProductPriceFoil
Premium Deck Series Slivers
Deck · $330.50
$330.50Foil Included
Combos
Rulings
5 · latest Jun 8, 2016
- WotCJun 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.
- WotCJul 15, 2006
Can’t reduce Snow mana costs.
- WotCOct 4, 2004
It will never reduce any colored mana portion of an activation cost.
- WotCOct 4, 2004
It will not add a
to abilities with no generic mana in their activation cost. - WotCOct 4, 2004
The cost reduction can be applied to additional costs.