Captivating Unicorn

Tapping down is not removal, but constellation reframes what a tap can buy. Each enchantment you control that enters points a finger at an opposing creature and shuts it out of a turn: no attack, no block, no crew, no convoke. Chained across a deck built to drop enchantments in sequence, that repeated tap behaves less like a single Pacifism and more like a soft lock, freezing whichever threat matters most on the swing that decides the game. The 4/4 body is nearly beside the point; this is a value engine that happens to attack. The design leans entirely on the constellation shell to justify the rate, and that is the honest cost: the Unicorn is not itself an enchantment, so it never triggers on its own arrival, and it does nothing to a stalled board until another enchantment lands behind it. But in a board full of auras, Sagas, and enchantment creatures entering one after another, it converts tempo-neutral development into a stream of forced taps, each one a partial Sleep aimed at exactly the creature you least want untapped. What separates it from a cast-trigger payoff is that constellation keys off "enters," not "cast," and only off enchantments you control: recurred auras, replayed enchantment creatures, and enchantment tokens all feed the same lock, while a nontoken artifact or a plain creature entering does nothing. Building around that distinction (enchantment permanents, entering, repeatedly) is the whole point.