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Keeper of the Lens has 1 printing, first in Dragons of Tarkir (2015). EDHREC ranks it #25,406 among Commander cards. It appears most in Sash and Waistcoat, Unmen decks (84 on EDHREC). It has 3 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.