Ob Nixilis, Captive Kingpin 41/50 (March of the Machine: The Aftermath)

Flying, trample Whenever one or more opponents each lose exactly 1 life, put a +1/+1 counter on Ob Nixilis. Exile the top card of your library. Until your next end step, you may play that card.

NM - $29.20
LP - $23.40
MP - $17.60
HP - $11.70
DMG - $5.90