Many players bring their favorite decks in hopes of doing well rather than picking the best deck in the format
So you can use Yanmegas Pok-Power twice a turn by retreating it and use Sceptile to transfer all Energies to Yanmega for some big damage output
CHR / CSR: The predecessors to AR / SAR in previous series
The first gives Skithiryx haste, letting you attack the turn it comes out, and the second is to regenerate Skitheryx, which is a slightly outdated mechanic that keeps it safe through most actions
Bulbasaur is classified as a 1-Star Shiny card in the Celestial Guardians set
Whenever you came to the game, whichever variant of a blue 1/1 that cant be blocked you prefer, they serve the same role: cheap bodies to exploit cards like Edric, Spymaster of Trest that reward you for dealing combat damage or a place to slap counters, equipment, auras, and whatever else you want to buff your army with