In the TCG, this works similarly, but giving the Pokemon holding it a specific Move they can use as long as they can pay the cost
They used to be able to evolve into their cross-gen relatives in a special way but ever since HGSS they've been treated as standalone Basics with no mechanical connection to their evolutions
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[2] During the Standby Phase: Each player can Special Summon 1 monster from their GY, ignoring its Summoning Conditions, but banish them when they leave the field
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Needing to have one Hedron Alignment in your hand, one on the battlefield, and one in exile and your graveyard, this is an incredibly difficult win to assemble