Whether all Cids or a lot of Cids decks are viable remains to be seen, especially as the rest of the Final Fantasy crossover set hasnt been revealed yet, chances are, popping a few Cids into certain decks is a huge benefit, especially ones using hero tokens.
As long as Xorn is in play, whenever its controller would create any number of treasure tokens, they produce that many plus one
It plays well with aggressive decks since you can easily race an opponent when you gain 4-5 life each combat and accumulate value from cards like Heliod, Sun-Crowned that care about lifegain
Never have been, and yet The Infamous Cruelclaw makes me look at my pile of Rakdos bulk and question if I can accomplish the impossible (for me)
Use playmat
Make your deck a wild ride with Myra the Magnificent as your commander or chase squirrel tokens with Comet, Stellar Pup