Legacy Energy - Pokémon Rulings Compendium

Say I have Mega Gengar ex with the "Shadowy Concealment" Ability in play. If my opponent Knocks Out my {D} Active Pokemon with Legacy Energy attached, how many prize cards would they take?: If the KO'd Pokemon is a Mega Evolution ex Pokemon, they would take 1 Prize. If it is a regular Pokemon ex, they would take 0 Prizes. If it is a non-ex (or any other non-Rule Box Pokemon), they would also take 0 Prizes. In all cases, Legacy Energy counts as being "used" and cannot reduce Prizes taken again later in the game.

Source: Phantasmal Flames FAQ; TPCi Rules Team (2025-11-13)

If my opponent KO's my Active non-ex Pokemon with a Legacy Energy attached and they take no Prize cards, would I get the extra benefits from Terrakion's "Retaliate" attack on my next turn?: Yes, you would. Even though the Pokemon with Legacy Energy attached does not give up a prize card, it still counts as a KO'd Pokemon.

Source: Black Bolt/White Flare FAQ; TPCi Rules Team (2025-07-17)

If I have Fezandipiti with the "Adrena-Pheromone" Ability as my Active Pokemon and it only has a Legacy Energy attached, can I attack with "Energy Feather" on my turn and also get the protective effect of "Adrena-Pheromone" during my opponent's turn?: Yes, although Legacy Energy only provides one unit of energy, it is providing all energy types all the time.

Source: Twilight Masquerade FAQ; TPCi Rules Team (2024-05-23)