Shallan, Cryptic-Bound

+1: Draw a card, then discard a card. If the discarded card was historic, add {u}{u} to your mana pool
-1: Exile another target non-land permanent you own, then return it to the battlefield under your control at the beginning of your next end step
-6: You get an emblem with "Whenever you draw a card, if it wasn't the first card you drew this turn, each opponent discards a card"