Raiela, Youthful Scholar

Study 2 (When this creature attacks, you may look
at the top two cards of your library, you may put one
into your hand, and then put the rest on the top or
bottom of your library in any order.)
{t}: Reveal the top card of your library, you may
cast that card, it and other cards in your hand
that share all card types with it costs {w}{u} to cast
until end of turn.