Changeling Berserker

Creature - Shapeshifter 5/3, 3R (4)
Changeling (This card is every creature type at all times.)
Haste
Champion a creature (When this enters the battlefield, sacrifice it unless you exile another creature you control. When this leaves the battlefield, that card returns to the battlefield.)¹
Illus. Warren Mahy

Format Legality	Legal in Vintage, Legacy, Extended Banned in Standard
Printings (1/9)	Lorwyn (Uncommon)