Each Universes Beyond crossover (Final Fantasy, TMNT, Avatar, Spider-Man, Marvel) releases play boosters, collector boosters, commander decks, bundles, and often scene boxes or special bundles unique to that set
Until now, due to out-of-effect text, it was treated as a card with the same name according to the rules, so no matter how many types you sent out to the world, as long as they were monsters with the same name in the Deck, the number of cards was limited to 3
The OP16 format may be one of the most open metagames we've seen since OP14 and OP15, largely due to the new set releases that provide support for both older and newer Leaders
That could include cheap 1/1 characters that you aim to spam out, or an alternative resource system for another effect
Ugin, the Spirit Dragon If you ever wanted to sweep away a bunch of small creatures, Ugin, the Spirit Dragon should be on your radar