Aurelion Sol, The Star Forger

Hexproof, Fury
When Aurelion Sol, The Star Forger enters the battlefield, look at the top three cards of your
library, reveal a celestial card from among them
with converted mana cost {7} or more. put it into
your hand and the rest on the bottom of you
library in any order.
If {w}{u}{b}{r}{g} was used to cast Aurelion Sol,
The Star Forger, gain
"Celestial cards you own cost {0} to cast."