Another little bit of trivia (thanks, wiki!) is that players initially thought Juzm Djinn was an awful card due to its self-damage effect
What custom Magic cards usually means (so you dont overcomplicate it) Most people making custom Magic: The Gathering cards fall into one of these buckets: Alt-art re-skins: Same card text, different art and vibe (your Sol Ring is now a cursed waffle iron, as it should be)
Sweetening the deal further, Bruse Tarl even has Partner, which allows for more options from the Command Zone
I think they could stand to be just the slightest bit more cohesively constructed, but whether you're new to Lorcana or just excited about the expansion, these are exactly what you want a starter deck to be.
UB: Classic Control You have to laugh a little when even the MTG Arena in-client archetype summary just lists UB as control
You can see it in the video from Arithon Hanzo below and pictures above, and the tape patches looked specifically made not just pulled off of a roll of sticky tape