Spawn of Destruction

Swampwalk, Fear, Afflict 3 (Whenever this creature becomes blocked, defending player loses 3 life.)
If a creature should die from damage dealt by Spawn of Destruction, instead exile it and put a +1/+1 counter on target creature you control.
{t}{5}{b}: Return target creature with converted mana cost 6 or less from exile onto the battlefield under your control. If a creature an opponent controls should die from this, untap {ut} Spawn of Destruction.
"I've come to take you to hell!"