Teferi- Master of Time (Showcase) (291)

You may activate loyalty abilities of Teferi, Master of Time on any player’s turn any time you could cast an instant.

+1: Draw a card, then discard a card.

−3: Target creature you don’t control phases out. (Treat it and anything attached to it as though they don’t exist until its controller’s next turn.)

−10: Take two extra turns after this one.