This mechanic does not exist in any English-language product
Start from a clean Magic: The Gathering card template or a blank MTG card template, drop in custom MTG art, tweak the card frame template, and youve got something that reads well on the table
Assuming you don't build in any cards from the booster packs, you'll mostly be relying on evolving Hop's Rookidee line and evolving Shelmet while collecting Energies before being able to cause any decent damage
The checklist separates the 67 main-set cards from 12 secret or high-rarity cards, including rarity groups such as SR, SAR, AR, UR
I'd already shipped over 40 sets with Marvel characters, and I'd been eagerly awaiting the chance to put some of that knowledge to use on Magic