Seraph of New Horizons

Flying, hexproof from all colors. (This creature
can't be the target of colored spells or abilities your
opponent's control.)
{5}, {t}: Search your library for a nonland card
with converted mana cost less than or equal to
the number of colors spent to activate this
ability, exile that card, then shuffle your library.
You may cast that card this turn without paying
it's mana cost, or put it into your hand.