Along with a new whisper character type and boost mechanic, we got to see the set's two cards at the new Iconic rarity, one featuring the Little Mermaid's Ariel, the other Hercules' Hades
Case in point: the Cosmic Foil variant of the Soul Stone card from Marvels Spider-Man has sold on TCGPlayer for $10,000, as reported by IGN
Monsters $33.00 USD Searching
I suspect its going to be from either sacrificing creatures to something, like Greater Good or Altar of Dementia, or a combat in which you intentionally sent creatures into harms way
As seen in the translation provided on Pokebeach , if the Pokmon to which Legacy Energy is attached is Knocked Out by damage from an opponents Pokmons attack, that opponent will take 1 less Prize card
Always read the mod's description to confirm that no different steps are needed and that they don't need to be placed in a different folder location