Chaotic Aether

The planar die is normally a probability machine: four blank faces, one planeswalk symbol, one chaos symbol, and the whole subgame of Planechase turns on how those odds land each roll. This phenomenon takes a hammer to that math. While the effect lasts, every blank face reads as a chaos symbol, so the die stops being a long shot on whether anything happens and becomes a near-guarantee that something does—only a planeswalk roll does something else, sending the active player onward—on top of whatever the active plane already fires on chaos. The catch is baked into how phenomena work: it self-terminates. You planeswalk off it as its encounter resolves, and the effect lingers over the next plane only until any player planeswalks away, so its window is exactly one plane's worth of turns. That short leash is the point. A permanent version would trivialize a format whose tension comes from the gap between rolling and rolling well; a one-shot burst of chaos across the current plane, then gone, keeps the die honest for the rest of the deck. It is a design that manipulates the format's core randomizer without owning a mana cost, a body, or a target: a rules-layer effect that exists purely to reweight the odds for a moment and then bow out.