The sad part is that neither is about the gameplay itself, rather how the product is sold to the player
Its a powerhouse in Limited, it sees play in the Eternal formats, and its great in Commander
Denoted by a rainbow prism icon and a rainbow effect applied to the cards artwork, Prism Star cards are limited to a single copy of each specific Prism Star card - but can be included alongside the standard maximum limit of a Pokmon of the same name
Lugia VSTAR SAR features the Guardian of the Seas in cinematic flight over stormy water, full borderless, with textured foil that catches light dramatically
Some of the cards that are good for your deck, like Sanctum Gargoyle, Executioners Capsule, and the Spellbombs, are good in other decks, so the most likely way to end up in Affinity is to just backdoor into it after picking up a few of these and noticing quality artifacts going late