Nozdormu, The Timeless One

Backup 1 (When this creature enters the battlefield,
put a +1/+1 counter on target creature. If that's
another creature, it gains the following abilities
until end of turn.)
Flying
Whenever this creature attacks, return target
nonland permanent card with mana value X or less
from your graveyard to the battlefield, where X is
this creature's power.