Eventually, you can start pitching them to damage your opponent once you've drawn enough cards
While you can use it as ramp in an artifact creature heavy deck, it can turn into a hidden win condition with the right cards
And that means that there's 64 different ways in which you can cast Cleave Blow, depending on how many times it's multicleaved and which bits of text you choose to ignore
Searching up cards like Daybreak Coronet, Spirit Mantle, and Ethereal Armor will make Zur more and more powerful, and he will quickly become a virtually untouchable enchanted monster capable of one-shotting other players with commander damage
Belle in particular looks great as a playable card in an already-popular ink combo
These three categories are where the differences from MB1 start to take hold because MB1 did not have Futureshifted cards or cards with white borders