Teferi, Hero of Dominaria
Legendary Planeswalker — Teferi
+1: Draw a card. At the beginning of the next end step, untap two lands.
−3: Put target nonland permanent into its owner's library third from the top.
−8: You get an emblem with "Whenever you draw a card, exile target permanent an opponent controls."
Seems like a control player's wet dream. Draw a card and ensure you have Drain mana up every turn, even the turn you cast him. Remove (temporarily or permanently) any nonland permanent until you find an answer? The 5cc means he doesn't replace Jace, but I can easily see playing 1 or 2 along The Mindsculptor. Their abilities have mad synergy.
Love this card!