1st edition base set booster box opening 1999 Pokémon Heavy Pack Should I open these original

Can I DigiXros with those trashed cards and place them in this Digimon's digivolution cards

A friend of mine picks up the entire set every time a new one comes out, and he is always on the hunt for the most random cards to complete them

POKEMON CARD GAME - PROMO CARD POKEMON CENTER HIROSHIMA PIKACHU P [SV-P 261] Japanese version Contents: Promo Card Pokemon Center Hiroshima Pikachu P [SV-P 261] 1 piece Be sure to add allPOKEMON CARD GAMEto your collection

Number C103: Ragnafinity has an upgraded version of this effect where she first deals effect damage equal to the difference between the target's original and current ATK before banishing it instead