Teferi of Lost Time

0: Your opponents choose to either put a loyalty counter on Teferi and you scry 3 or you take an extra turn after this one.
-1: Tap target creature. It doesn't untap during it's controller's untap step.
-5: Exile the top 20 cards of each players deck. Until end of turn, you may cast spells from exile by paying their converted mana cost.