Mystery Key

Artifact — Equipment - (uncommon)

When equipped creature deals combat damage to a player, sacrifice Mystery Key. If you do, draw three cards.
Equip  (: Attach to target creature you control. Equip only as a sorcery.)

Price

cardkingdom 0.35

cardsphere 0.1

manapool 0.15

tcgplayer 0.06

cardmarket 0.09