Teferi, Master of Time - Showcase

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.