Unstable Shapeshifter
A clone that never settles. Where Clone fixes its choice the moment it enters, this one re-templates itself every time another creature enters the battlefield, friend or foe, copying the newcomer and retaining nothing but the right to do it again. That single kept ability does all the work: it turns a static copy effect into a running ledger of whatever entered last, which means its identity is never yours to hold for long. The trigger keys off entering, not casting, so reanimation, blink, and token-making all flip it just as readily as a hardcast creature does. The body is a 0/1 until the first creature shows up, and from then on it is hostage to the table's tempo. The tension is that the same instability that makes it unreliable as a build-around makes it a strange kind of mirror: every threat an opponent commits also becomes yours, one beat behind. It rewards being the last to act rather than the first, since the most recently entered creature is the one you wear. This is open-ended copy design from before later sets learned to tame the effect by letting the player choose which creature to copy and when. Here there is no choosing; the card reacts, and you live with whatever it becomes. It reads less like a tool than a puzzle, a copy effect that surrenders the one decision a clone normally exists to make.
