Rain Castform

# Rain Castform (Delta Species) Rain Castform from Delta Species represents the Pokémon TCG's experimental phase with type-shifting mechanics. Collectors value this card for its connection to the Delta Species block, which explored alternate typings and creative departures from standard gameplay. The card's appeal lies in completing Delta Species collections rather than competitive utility. The reverse holofoil variant attracts collectors who prefer the aesthetic of non-full-art holos, offering a different visual presentation than the standard version. Both versions remain moderately accessible, making Rain Castform an achievable target for set builders. Its significance is primarily historical—marking a period when the TCG embraced mechanical innovation, even if those mechanics didn't define the game long-term.