Dreamweaver Ascendant

{2}{w}, {t}: Look at the top three cards of your
library. You may reveal a legendary creature card
from among them and put it into your hand.
Put the rest on the bottom of your library in
any order.
Dream (Whenever you control three legendary creatures, you may activate this creature's Dream
ability) {3}{w}{w}, {t}: Until end of turn, creatures
you control get +2/+2 and creatures your
opponents control get -2/-2.