Brutal Cathar // Moonrage Brute

Banishing Light stapled to a 2/2, with the exile bolted to a body that can flip out of your control. The front face carries the whole engine: whenever it enters or transforms into Brutal Cathar, it exiles an opposing creature, and that creature stays gone only "until this creature leaves the battlefield." Kill the Cathar and the threat comes home at full value. The day-night cycle is the pressure valve on that bargain. Daybound keeps the removal locked in as long as somebody keeps casting spells, but let a turn pass quietly and night falls, transforming the front face into Moonrage Brute. That transform is not a stat toy the way most werewolf flips are; because the exile trigger fires on transforming into the Cathar, flipping back can re-exile a fresh target rather than merely swap stat lines. The Brute side is the counterweight: it drops the exile clause but gains first strike and Ward, taxing the removal aimed at freeing the trapped creature precisely when your opponent most wants to spend it. The whole card is a leash whose length both players fight over: they want the Cathar dead to reclaim their creature, you want the day-night rhythm and the Ward tax to keep it caged. What reads as a three-mana blink is really a repeatable exile whose duration is a negotiation, decided one spell and one moon at a time.