
Look at the top ten cards of your library, exile up to two creature cards from among them, then shuffle. Target opponent may choose one of the exiled cards and put it onto the battlefield under their control. Put the rest onto the battlefield under your control.
Dubious Challenge has 2 printings, first in Kaladesh (2016). EDHREC ranks it #26,212 among Commander cards. It appears most in Iwamori of the Open Fist decks (8 on EDHREC). It has 5 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.