There's a lot here, and I have a lot of card previews to show you, so get your pen and paper ready, turn on your deckcrafting brain, and enjoy
Even with the once-per-turn restriction, which prevents easy infinite loops, the incremental advantage is staggering
So, go forth make a jerkoff artifact deck, if you want
I had heard rumors that we were talking to Marvel about a potential Universes Beyond collaboration, but just rumors
In Guilds of Ravnica , we have five of them: the red-white righteous militia of Boros, the blue-red mad scientists of Izzet, the blue-black sneaky spies of Dimir, the black-green masters over life and death of Golgari, and the unified green-white conclave of Selesnya
Invasion of Ikoria instead gives you a huge dinosaur that allows your attacks to effectively ignore blockers when dealing damage