UB can play off the same strong commons and uncommons as UR does, and it has some great expensive spells to pair them with like Sephiroth's Intervention, Ice Magic, Dreams of Laguna (flashback), and Sidequest: Hunt the Mark
That's why Upheaval is such a bomb: there are virtually no ways to deal with it, and once it is cast you can end up with two to three creatures plus a land on the board while your opponent literally has nothing, and has a hand full of sixteen cards they need to discard down to seven
We deconstructed the Blue Vise deck, and the main change I made was to begin cutting Vises and adding more Ancestrals and more Mox Sapphires
What are the main MTG Arena deck archetypes
Equip Whenever a nontoken creature is put into your graveyard from the battlefield, you may pay
Gut, True Soul Zealot It was only a matter of time until a goblin found its way onto todays rankings, and that goblin is Gut, True Soul Zealot