Screeching Bat // Stalking Vampire

A double-faced card that flips in both directions, which is the wrinkle worth dwelling on: most transforming cards walk a one-way road, with a front face that becomes a back face and stays there. Here both halves carry the same upkeep cost to flip, so the Bat and the Vampire are not progression but a switch you can throw repeatedly, paying four mana each time you want to swap a 2/2 flier for a bigger ground body or back again. The honest read is that this is an early experiment in what transform could do once Wizards had committed to physical double-faced cards rather than tokens or counters to track a flipped state. The flying side gives you evasion and a body that survives the early turns; the back side trades that air mobility for size. The tax is recurring and self-limiting: the trigger sits on your upkeep, so every flip is mana committed before your draw step and your main phase, competing with everything else you want to do that turn. That makes the toggle a luxury, rewarding a deck flush enough to actually use it rather than pick one form and leave it. It reads less like a finished engine and more like a proof of concept for symmetric transformation, the kind of design that mostly served to show the mechanic's range before later cards put one-directional flips to sharper use.