Whenever Supplanter of Identity attacks you may exile another target non-token creature. If you do, Supplanter of Identity becomes a copy of that creature until the end of the turn. Return the exiled card to the battlefield under its owner's control at the begining of the next end step.
0/3
MYTHICSPOILER.COM THE CYCLICAL MTG SPOILER
MythicSpoiler is a dedicated visual spoiler, designed to let you EXPLORE, DISCOVER and EXPERIENCE new Magic the Gathering sets in a simple, sortable gallery.
KHANS OF TARKIR 
COMMANDER 2014
FTV: ANNIHILATION 
SPEED vs CUNNING 
MAGIC 2015 
CONSPIRACY 
MORE SETS
