Phyrexia: All Will Be One

Shrapnel Slinger | Artifact Creature | Phyrexian Beast | When Shrapnel Slinger enters the battlefield, you may sacrifice a creature. When you do, destroy target artifact an opponent controls. | Joseph Meehan

Urabrask's Anointer | Artifact Creature | Phyrexian Wizard | When Urabrask's Anointer enters the battlefield, it deals X damage to any target, where X is the number of permanents you control with oil counters on them. | Aaron J. Riley