This clever loop relies on the constant interplay between Kelpie Guide and Clever Conjurer, which take turns tapping to untap one another indefinitely. Because Unctus, Grand Metatect grants every other blue creature a triggered ability whenever it becomes tapped, each tap of the Guide or the Conjurer triggers a free loot, allowing you to cycle through your entire deck at will. Unctus also ensures that your creatures count as blue artifact creatures, which conveniently pumps the team with its static buff while turning your untap shenanigans into a massive card-filtering engine.