The sacrifice ability occasionally came in handy, guarding against mass removal even though it was never the primary motivating factor, and it was hard for decks running him to justify keeping the necessary mana untapped until very late in the game
The Ruby & Sapphire favorite is featured in a stunning Full Art card which portrays the Dark-type standing in front of a river that is tucked away in a Hoenn region valley
Cards like Sevinne's Reclamation and Faithless Looting are classic flashback examples, and it showcases a typical quirk: Alternative costs usually come with some conditional (in this case, be in your graveyard) that you have to fulfill if you want to cast the spell for its alternative cost
BT13-094 U Tamer Kristy Damon Color Red Cost 3 Card Text 1 [Effect] [Start of Your Main Phase] If you have a Digimon with [Avian] or [Bird] in one of its traits, gain 1 memory
However, based on the official statement, it appears Nanahara was given reference material to make the card