Sorinjace, Pack Gatherer

Creature spells you cast can't be countered and you may cast creatures as though they had flash.
{b}{g}{u}, {t}: Look at the top two cards of target player's library, exile one of them face down and
put the other on the bottom of their library. You may look at and cast cards exiled with Sorinjace
for as long as they remain exiled, and you may spend mana as though it were mana of any type