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
- Pull rate
- about 1 per booster
- Illustrator
- John Matson
- Found in
- Premium Deck Series Slivers
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 finishspark updated 1h ago · prices as of 2026-08-30
TCGplayerFinish
Market
Δ 30D · Trend
Low
Buylist
Buy / Sell Gap
Buy
Foil
$5.45
+2.8%
Since Feb 2024:H $5.67L $3.37$4.00
$2.75
$1.25+31% · normal spread
VenuesHide venues
Low: tcgplayer
Buylist: cardkingdom
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.