Enigmatic Incarnation

The engine turns on a single window: the beginning of your end step, where you may sacrifice an enchantment you no longer need to fetch a creature one mana value higher and drop it straight onto the battlefield instead of casting it. That end-step timing is the whole machine, because it converts every spent Aura, every stapled-on enchantment creature, every ramp enchantment into a tutor that also cheats the mana cost. The design lives on the seam between two of green-blue's oldest impulses, ramping into fatties and building a value web out of enchantments, and it resolves that pull by making the enchantment shell itself the fuel. A one-mana enchantment fetches a two-drop; a three-mana enchantment fetches a four-drop, and so on up the curve, so the deck around it wants a ladder of enchantments at each rung feeding into a specific creature you actually want on the board. Enchantment creatures are the cleanest input, since one can be the thing you sacrifice this turn and the target of the search next. The firing schedule is the counterweight: it fires once, automatically, on your own end step, so you can only cash it in after you have survived to the back half of the turn with an enchantment to spare. It is a toolbox on a slow fuse, built for a player willing to construct the whole staircase before the payoff arrives.