With generative artificial intelligence being so commonplace, it has become hard to count some styles as unique, as they were the basis and de facto default for fantasy AI art
While I dont know for sure that this is how it works, I would be safe and wait to actually buy your tickets on the 6th or after just to make sure you dont miss out on a promo because of some lame technicality
Decks that are hyper lean, like Murktide, Hammer, and Cascade-based decks are all vulnerable to Spell Pierce because they are using so much of their mana every turn from the start of the game that it is genuinely difficult to not find an acceptable use for Spell Pierce
Emeritus has a huge benefit ceiling and very little downside
The list comes from user vantharion on Moxfield
While a majority of the Welcome Deck cards arent too powerful, there were a few that were interesting