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You can only use this effect of "Synchron Carrier" once per turn

Multi-Choice Effect: An optional effect that can be activated once per turn during its possessor's Main Phase, and allows the activating player to choose which effect to apply among two or more

Note that the Special Illustration Rare (#116) of this same Pokemon was done by a different artist, Susumu Maeya

Stay tuned for more details in a future announcement

While Thrill of Possibility will have a hard time replacing Cathartic Reunion in something like Dredge which cares desperately about raw cards in the graveyard, there are graveyard-based archetypes that will absolutely relish the opportunity to start playing at instant speed