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You just KNOW they are going to get renamed Gigantamax forms, but with gimmicks to differentiate them from regular Gigantamax, like Primals with Megas or Ultra Necrozma with Z-moves
I bet they're going to last the entire battle instead of 3 turns, and will have special G-Max moves coming from Spacial Rend/Roar of Time/Shadow Force/Judgement instead of all Dragon/Ghost/Normal moves, so they'll be able to use both the regular Max Moves of those types and their signature G-Max moves