Mordekaiser, Iron Revenant

Mordekaiser, Iron Revenant enters the battlefield with four +1/+1 counters on it.
If damage would be dealt to Mordekaiser, Iron Revenant while it has a +1/+1 counter on it,
prevent that damage and remove a +1/+1
counter from it.
{b}{b}{b}: Exile Mordekaiser, Iron Revenant from
your graveyard: Target creature gets -3/-3 until
the end of turn.