whenever you draw a card, put a loyalty counter on teferi, temporal pilgrim.
0: draw a card.
−2: create a 2/2 blue spirit creature token with vigilance and "whenever you draw a card, put a +1/+1 counter on this creature."
−12: target opponent chooses a permanent they control and returns it to its owner's hand. then they shuffle each nonland permanent they control into its owner's library.
