Artifact lands tapped for two in affinity decks, Equipment offered way too much power for the resilience they came with, and modular was a surprisingly linear deck with explosive endpoints
This time, I think they may have just completely blown the lid off the formula for Commander precons
This is also a setting that did some interesting stuff with hybrid mana, like this here where you can pay three white or six colorless, or any combination there of
Mahadi, Emporium Master can create a treasure token on each of your end steps if a creature has died that turn
The big limitation is the lack of other Kavu, but Possibility Technician seems borderline playable as your only Kavu (along with a Soulstone Sancturary or two to late game be able to play any exiled cards)
In the case of Thanos, the Mad Titan, you can pay WUBRG to gain two +1/+1 counters before destroying all other creatures with an odd or even mana value, a decision you declare when activating the ability