Kaz, The Hungry Demon

Menace
When you untap Kaz you loose X life , where X
is the number of +1/+1 counter on Kaz.
{t}: You loose 1 life. Put a +1/+1 counter on Kaz.
{r}{r}{b}{t}: You loose 2 life,Sacrifice a creature .
Put two +1/+1 counter on Kaz.
{x}{r}{b}{t}: You loose 6 - X life . Sacrifice Kaz .