Are V-Union Cards Worth Adding to Your Pokemon Trading Card Game Collection? – In Third Person
Pikachu V-UNION (SWSH Promo 139) - Bulbapedia, the community-driven Pokémon encyclopedia
V-UNION Mechanic Revealed: Four Cards Form One Pokemon. It can only be put into play when all 4 parts are in the discard, and they give 3 prizes. I think this seems