If the original token is copying something else, the token you create will use the copiable values of the original token
This would prevent you from stockpiling a single wildcard rarity if there are no cards of that rarity you want or need
Still, this is the first time since the printing of Grist, Hunger Tide that the codification of what a Commander can be has changed, this time to reflect any card with a power & toughness box on its front half...and uh, Grist
In isolation, the Winterspell story is brilliant, and the artwork within the set is so suited to its winter release window
Where it really seeks strength is in decks with a lot of self-sacrifice like Aristocrats where you don't mind either side since you'll be sacrificing and bringing back a creature over and over again, and you'll gain life as a 1-drop or as a two-mana disturb
If you dont need the tokens, start pumping your board, or if you dont really have any creatures, start making them