Teferi, Master of Time
Oracle Text
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.
-10: Take two extra turns after this one.
Interesting design but in a normal game this is too much a looter with a very weak defend ability i think. Really depends on the value of the looting, if there are mechanics like madness, delirium etc. supporting that this could be strong. Otherwise you are paying a lot for some looting and this defends itself very poorly. Although i suppose against most things you just take the hits instead of going -3.