Teferi, Temporal Pilgrim is a mythic Legendary Planeswalker — Teferi card from The Brothers' War Promos (PBRO), collector number 66p. Current market price: $6.32 (foil $5.27), TCGplayer market prices via Scryfall.
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.