
Target opponent reveals their hand. You choose a nonland card from it and exile that card.
Delirium — If there are four or more card types among cards in your graveyard, search that player's graveyard, hand, and library for any number of cards with the same name as the exiled card, exile those cards, then that player shuffles.
Pick the Brain has 2 printings, first in Shadows over Innistrad (2016). EDHREC ranks it #30,361 among Commander cards. It appears most in Keskit, the Flesh Sculptor decks (1 on EDHREC). It has 5 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.