Hedron Detonator 31 (Commander: March of the Machine)

Whenever an artifact you control enters, this creature deals 1 damage to target opponent. {T}, Sacrifice two artifacts: Exile the top card of your library. You may play that card this turn.

NM - $12.20
LP - $9.80
MP - $7.40
HP - $4.90
DMG - $2.50