Bolas' Acolyte

Whenever you cast a Bolas planeswalker spell, until end of turn, Bolas' Acolyte gets +x/+x and Annhilator 2, where x is the converted mana cost of all Bolas planeswalkers you control.
{t}, {u}{u}{u}: Exile target permanent until your next turn.
{t}, {b}{b}{b}{b}: Destroy target creature. It can't be regenerated.
{t}, {r}{r}{r}{r}{r}: Bolas' Acolyte deals damage equal to it's power to target player