Mordekaiser, the Iron Revenant

Whenever Mordekaiser kills a creature with lesser power, Put a +1/+1 counter on him.
{3}{b}, {t}: Put a +1/+1 counter on Mordekaiser,
and it fights target creature, if target creature
would die, exile it. Until it returns to the battlefield, Mordekaiser has all abilities of that
card.
When Mordekaiser is put in
any graveyard, exile it, then cast it from exile
with suspend 4.