Set boosters are designed to help you build your collection while cracking packs: one to four rare or mythic cards, three to seven uncommons, three to seven commons, and a basic land
Caveats First, let me clarify that this is only appropriate later in the development process, when you want some nicer-looking cards than the scraps of paper in sleeves approach
The transform ability isnt just flavor text, either

Here are the top valued cards of Pokmon TCG: Scarlet & Violet Surging Sparks with market values observed on TCGPlayer as of this writing: Pikachu ex Special Illustration Rare 238/191: $477.40 Latias ex Special Illustration Rare 239/191: $249.88 Milotic ex Special Illustration Rare 237/191: $130.64 Pikachu ex Gold Hyper Rare 247/191: $129.77 Hydreigon ex Special Illustration Rare 240/191: $85.98 Alolan Exeggutor ex Special Illustration Rare 242/191: $72.71 Lisia's Appeal Special Illustration Rare Trainer Support 246/191: $59.58 Ceruledge Illustration Rare 197/191: $44.52 Jasmine's Gaze Special Illustration Rare Trainer Support 245/191: $40.73 Latios Illustration Rare 203/191: $38.19 Pikachu ex Full Art 219/191: $35.60 Durant ex Special Illustration Rare 236/191: $33.79 Night Stretcher Gold Hyper Rare Trainer Item 251/191: $28.31 Archaludon ex Special Illustration Rare 241/191: $26.22 Alolan Exeggutor ex Gold Hyper Rare 248/191: $19.69 Pikachu ex Special Illustration Rare is down by $10

He costs five to play but can be shifted in for only three ink
He was the face of the game Pokmon Blue and can achieve Gigantamax form as well as Mega