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 - $14.60
LP - $11.70
MP - $8.80
HP - $5.90
DMG - $3.00