That remains to be seen, but for now, it would seem that - other than one Look at this Family, Julieta Madrigal, and Ariel Singing Mermaid - there's nothing in this deck that will help you build better decks
Now, there will be people who dont want to deal with this at all
This mana doesn't empty from your pool between the phases of your turn
While I still have some reservations, I find the D&D crossovers a lot easier to reconcile with Magics aesthetic (as I likely will with the Lord of the Rings set, and I am sure I would have were this set of precons focused on Warhammer Fantasy Battles, or even Age of Sigmar)
Id say it passes the test, though Im not sure Im playing outside of counters decks
Furthermore, this deck contains many noncreature enchantment cards that use the new framing paradigm