Putresce of the Fog

Deathtouch, Menace.
{x}{x}{b}{b}{b}; Sacrifice X creatures, choose one; Target creature gets -X-X : You gain
X life : Or place X infection counters on X target creatures, where X is the total power of the sacrificed creatures.
The fog was filled with many deadly beast, yet only
one to clean it all up. And it's very good at its job.