I dont think its a big market individual packs are a lot easier. Resealing those individual boosters is called repacking or resealing and its as old as Magic itself
This allowed them to function identically mechanically while making their drawback clearer and allowed more flexible card design as Wizards could print defenders that didnt need to be walls, like Wingmantle Chaplain
Outside of Gev, Scaled Scorch, a lizards-matter commander that you should try to build if you have Bloomburrow lizards, theres not a unified theme, so we have dragon commanders, treasure commanders, food commanders, clue commanders, and the list goes on
Casualty references an additional cost paid as the spell is cast
Pokmon Card Game Table Mat How to Use & Care Guide