
Target opponent chooses X cards from their hand. Look at those cards. You may cast a spell from among them without paying its mana cost.
Extract Brain has 3 printings, first in Forgotten Realms Commander (2021). EDHREC ranks it #8,719 among Commander cards. It appears most in Gonti, Canny Acquisitor decks (3,351 on EDHREC). 2 public decks on TCG run it.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.