I love most of those properties - yellow sponges aside - a lot, but I've never really understood why I'd want a deck of cards based on them
From pure beatdown, to ramp, to Earthbend, to benefiting off four power creatures, red-green has a few different themes at work
Ive managed to sell tons of unopened Secret Lairs, as well as random things like stacks of foil lands, full-arts, etc
That said, the chibi Sarkhan Vol is worth a few dollars less than its Shards of Alara and Modern Masters printings, and the chibi Ajani, Mentor of Heroes is worth about a dollar less than its Journey into Nyx printing
Its not the easiest deck to master , but if you enjoy thinking a few steps ahead, its super rewarding
Kamigawa snakes are interesting as a race and with additional support, could be an archetype to build a niche in