Eris, Master of Deception

Lifelink, haste, prowess.
{b}{g}{t}: Exile the top card of your library, put X +1/+1 counters on Eris, Master of Deception, where X is the card's converted mana cost.
{b}{b}{g}{g}{t}: Take control of target creature until end of turn. It gains haste until end of turn.
"Come here, let me show you the meaning of true power."