Iron Revenant, Mordekaiser

{1}{b}{b}{b}{t}: Place a -0/-2 token on target enemy creature, if the creature dies this turn summon a
creature copy token of it on your side. If
Mordekaiser leaves the battelfield, exile all
creatures summoned this way.
{4}{b}: As an additional cost sacrifice 3 creatures,
return Mordekaiser to the battlefield tapped
Mordekaiser gains +2/+1 for every 2 power
(summed up) of ally token creatures