
You may look at the top card of your library and at face-down creatures you don't control any time.
Lens of Clarity has 1 printing, first in Khans of Tarkir (2014). EDHREC ranks it #19,440 among Commander cards. It appears most in Sash and Waistcoat, Unmen decks (266 on EDHREC). It has 3 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.