Rodolf Duskbringer

Flying, deathtouch, lifelink
Whenever you gain life, Rodolf Duskbringer
gains indestructible until end of turn.
At the beginning of your end step, you may
pay {1}{w/b}. When you do, return target creature
card with mana value X or less from your
graveyard to the battlefield, where X is the
amount of life you gained this turn.