Attrition [Commander 2011] The Dark Set: Limited Edition Alpha Type:

Set: Limited Edition Alpha Type: Land — Plains Swamp Rare Cost: ({T}: Add {W} or {B}

Sacrifice Powder Keg: Destroy each artifact and creature with converted mana cost equal to the number of fuse counters on Powder Keg

put one of those cards on top of your library and the rest on the bottom of your library in any order

Set: Shards of Alara Type: Legendary Planeswalker — Tezzeret Mythic Cost: {3}{U}{U} +1: Untap up to two target artifacts

create that many 1/1 colorless Tetravite artifact creature tokens

Attrition [Commander 2011] The Dark Set: Limited Edition Alpha Type:Set: Commander 2011 Type: Enchantment Rare Cost: {1}{B}{B} {B}, Sacrifice a creature: Destroy target nonblack creature. "I will trade life for life with the insurgents. Our resources, unlike theirs, are limitless." Davvol, Evincar of Rath