Sheoldred, Whispering One [New Phyrexia Prerelease Promos] Aether Revolt Whenever another creature you own

Whenever another creature you own dies

that player loses 10 life

{1}: Mishra's Factory becomes a 2/2 Assembly-Worker artifact creature until end of turn

Set: Planar Chaos Type: Sorcery Rarity: Rare Cost: {2}{B}{B} Destroy all creatures

Set: Magic Player Rewards 2011 Type: Instant Rarity: Rare Cost: {W} Choose a color

Sheoldred, Whispering One [New Phyrexia Prerelease Promos] Aether Revolt Whenever another creature you ownSet: New Phyrexia Prerelease Promos Type: Legendary Creature Phyrexian Praetor Rarity: Mythic Cost: {5}{B}{B} Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.) At the beginning of your upkeep, return target creature card from your graveyard to the battlefield. At the beginning of each opponent's upkeep, that player sacrifices a creature.