Kraven the Hunter

Whenever Kraven the Hunter enters the battlefield or attacks, put a prey counter on target creature an opponent controls.
Whenever a creature with a prey counter on it
dies, put a +1/+1 counter on Kraven and you
draw a card.
Sacrifice a creature: Regenerate Kraven the
Hunter.
{1}{b}{g}: Kraven the Hunter fights target creature
an opponent controls.