Graven Dominator

The cleverest thing Haunt does here is split a one-shot board reset into two halves, with the controller choosing when the second one fires. The enter trigger flattens every other creature to a base 1/1 for the turn: oversized threats become trivial to block or trade with, anything that cheated a huge printed body onto the table shrinks to a 1/1 base, and the 4/4 flier sails over a suddenly toothless ground. Then the body dies and exiles itself haunting a creature, any creature, and that is where the real decision lives. Haunt the opponent's best blocker and the second shrink hangs over the table as a threat they have to respect; haunt one of your own creatures (ideally one you can sacrifice on demand) and you hold the second mass-shrink as a reset you fire on your own terms, mid-combat or in response to a pump spell. One card, two windows to rescale the board, and the second is live regardless of how the opponent plays around the first. Worth knowing the limit: setting base power and toughness happens in layer 7b, while +1/+1 counters apply later in layer 7c, so a creature carrying counters keeps that bonus stacked on top of its new 1/1 base, and nothing actually dies from the shrink unless something else is reducing its toughness below 1. A controlling flier built to win in the air while keeping the ground perpetually unstable.