At this point, the Hero deck would begin to peter out of its supply of Heroes, and the Rat deck would begin to stabilize
Snow White and the Seven Dwarfs join the game with fun, new connecting artworks
Izzet Spellslinger can utilize artifacts a TON of useful ways, such as: Ramp with them using cards like Galazeth Prismari and Inspiring Statuary Draw cards off them with cards like Shimmer Dragon and Universal Surveillance Deal damage with them using Ghirapur Aether Grid Turn them into finishers with Rise and Shine and Cyberdrive Awakener Fuel powerful Improvise, Metalcraft, and Affinity cards like Reality Heist and Whir of Invention Honestly, ignoring the other stuff Attractions do, "cast an instant/sorcery make an artifact" is literally worth including
Creatures you control with +1/+1 counters on them have all activated abilities of all creature cards exiled with Agatha's Soul Cauldron
This means you don't have to devote any time away from pouring energy onto your multiple Munkidoris and can reap the benefits of both a big attacker in the active spot and a ton of chip damage from the bench