Target nonland permanent's owner puts it on their choice of the top or bottom of their library. Scry 2.

Whenever you draw a card, put a loyalty counter on Teferi. 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 token." −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.

Target player draws cards equal to half the number of cards in their library and loses half their life. Round up each time.