Infestor

{g}{g}: Create a 2/1 red Broodling creature token
with "Sacrifice Broodling at the beginning of the
next endstep." It gains haste.
{b}{b}: Target creature gets -1/-1 until end of turn.
{r}{r}, {t}: Gain control of target creature until
end of turn. Untap that creature, it gains haste.