Tetrog, Warped Roil

Devoid, Haste, Menace
{b}: Target creature gets -1/-1 until end of turn.
{r}: Add one mana of any color.
{g}: Target creature gets +1/+1 until end of turn.
Whenever a creature dies, put a +1/+1 counter
on Tetrog, Warped Roil.
"Emrakul's influence seeped out from her prison."