Of course, as more MTG cards are released, more powerful enchantments can shine in Zur decks, but people usually prefer trying to build new brews rather than just reinventing the wheel
You do have to have sufficient cards to pitch to it which not only means blue cards but also means cards you can afford to lose
Cards like Sol Ring, Command Tower, and Arcane Signet are usually a guaranteed reprint in Commander-focused sets, as are dual lands like the Theros Temples (Temple of Abandon, Temple of Deceit, Temple of Silence) and the Snarls from Strixhaven (Necroblossom Snarl, Furycalm Snarl,Frostboil Snarl)
Solemnity prevents counters of any kind from being out on your creatures, as well as artifacts, enchantments, and lands
They can be printed at home, or hastily drawn on paper
Use this with a Commander like Maarika, Brutal Gladiator, and you can essentially wipe most of your opponents boardstate