Heartstone
The List (PLST #H09-26)
Pricespreview
CKCard Kingdom
Normal
$2.49
CMCardmarket
Normal
€1.27
MPMana Pool
Normal
$0.98
TCTCGplayer
Normal
$2.49
Heartstone
CMC: 3
Type
Artifact
Rules Text
Activated abilities of creatures cost 
less to activate. This effect can't reduce the mana in that cost to less than one mana.
Printing
The List (PLST #H09-26)
uncommon
Illustrated by John Matson