The Commander Legends: Battle for Baldurs Gate Set Booster Box contains 18 Commander Legends: Battle for Baldurs Gate Set Boosters
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
Once youre comfortable with modifying your deck, the best and most cost effective way to build up a collection is with an Elite Trainer Box, which gives you all of the premium accessories you need including damage dice, plastic condition markers, a small number of energy cards of each type and themed card sleeves along with a set guide book, 9 booster packs and even a promo card
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
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