Wren's Run Packmaster [Lorwyn]

Set: Lorwyn Type: Creature — Elf Warrior Rarity: Rare Cost: {3}{G} Champion an Elf (When this creature enters the battlefield, sacrifice it unless you exile another Elf you control. When this creature leaves the battlefield, that card returns to the battlefield.){2}{G}: Create a 2/2 green Wolf creature token.Wolves you control have deathtouch.