The Master of Keys
The variable X in the cost is doing double duty here, and that is the design tell. Pay it once and you scale the body, mill a proportional chunk of your library, and fund the graveyard you are about to recur from, all off the same number. That third function is the point: everything this creature does after it lands routes through the enchantment cards it just buried. The escape grant is the engine, converting your graveyard into a second hand of enchantments you can rebuy for their mana cost plus three cards in exile. The exile clause is what keeps the loop from being free; each recursion strip-mines the yard, so the same mill that fills the tank is also the resource you spend to empty it. That tension (fill fast, then ration the exile fuel) is what separates this from a flat reanimation payoff. It rewards enchantment-dense decks specifically, because the escape ability only touches enchantment cards, and it turns the graveyard from a resource you protect into one you deliberately churn. Escape as a mechanic already asked you to overfill the yard to pay its delve-like tax; grafting that structure onto a mill-your-own creature closes the circuit, letting the same card generate the pile and set the terms for cashing it in. The 3/3 flying body is almost incidental to the machine, present so the card can pressure life totals while the enchantment recursion does the real work.
