Keep in mind that this will require you to have the corresponding card in your MTGA collection or to have wildcards available to craft them, so there may be some extra work involved
I think the one thing I would've liked to see more of in the list are summon cards: if you look at our commander options, Tidus, Yuna's Guardian and Yuna, Grand Summoner, both clearly work exceptionally well with the new summon creatures like Summon: Valefor as Tidus can remove lore counters to keep them around longer and Yuna can pump up creatures when the summons die, and that's a unique new game design space that would differentiate the deck from more generic +1/+1 Counter lists out there
It's full of synergies with Brenard across all types, including Golem, Food, token, and artifact, creating a deck with a complex flavor
Collecting Rainbow Pokmon cards can be a rewarding hobby, but investment success depends on careful consideration and knowledge of the collectible card games market
Red has access to a good amount of cards with this effect
Warmaster + Druid + the token it makes is the exact three Elves you need to use the Druid