Raezar, Host of Galaxies

Embodiment - {2} (If you pay the Embodiment
mana cost, this creature becomes target creature an opponent controls. At the end of the combat phase, the opponent must sacrifice that creature or be dealt 5 damage. You may pay the Embodiment cost at any time.)
Whenever a creature an opponent contols dies, Raezar, Host of Galaxies get's a +1/+1 counter
and indestructible until the end of the turn