Atarka Efreet

A 5/1 wants to attack and never look back: a body that trades up only when the opponent has nothing left to swing with, and dies to almost anything the moment it stops running. Megamorph hides that fragility. Deploy the card as a generic 2/2, hold your mana, and the flip itself becomes the payoff: turning it face up bumps the body to 6/2 and lands one damage anywhere you point it. That pinger is the whole reason to flip proactively rather than reactively. It doubles as combat math and reach at once: a one-toughness blocker dies, a planeswalker sheds loyalty, a burn spell finishes a race. What separates this from a plain flip-into-a-bigger-body morph is exactly that damage rider, which punishes an opponent for committing a small creature to the board and gives you a reason to unmorph on the attack rather than as a bluff-breaker in defense. The concealment does real work too. An unrevealed 2/2 could be a dozen different things, and the threat of an instant-speed flip warps how an opponent commits to combat long before you spend the mana. The frail 5/1 base is what you pay for all that optionality: a creature that hits hard, folds easily, and earns its slot by arriving as a question rather than a statement.