Elda, Conjurer of Spectacle

Modern's speed and efficient removal make a four-mana 2/2 that requires another creature spell far below the usual rate.

Could be wrong if A new low-cost creature combo that specifically benefits from token spell copies could create a niche.

At four mana, Elda is too slow and fragile for Legacy, while its main payoff is symmetrical rather than immediately decisive.

Could be wrong if An unusual Ancient Tomb-based creature engine could make its copy effect less symmetrical than it appears.

Creature and token decks can turn repeated copies into value, but four mana, fragility, and gifting a creature keep Elda niche.

Could be wrong if Multiplayer politics and token-payoff density may make the chosen opponent's copy far less costly than expected.

It is effectively a four-mana 2/2 until another creature is cast, and that creature is duplicated for an opponent as well.

Could be wrong if Unknown token synergies or unusually favorable creature ETBs could turn the copied token into a real advantage.