Kefnet's Monument (AKH) #231 [EN/F] s/o

{3} · Legendary Artifact · Blue creature spells you cast cost {1} less to cast. Whenever you cast a creature spell, target creature an opponent controls doesn't untap during its controller's next untap step. · "The worthy shall cultivate a nimble mind to perceive the glorious wonders that await them." —Monument inscription · Illustrated by Titus Lunter · Amonkhet #231 · EDHREC rank 5039 · Magic: The Gathering, MTG