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
You might expect reveals to be running on fumes by now, down to Draft chaff commons and janky rares
This is actually a great example of why counterfeiters exist
Or something like: Whenever a creature with Flying enters the battlefield, something happens
The best bet you have are suspended spells since it wont exile those already exiled spells, or casting your commander from the command zone with some floating mana
The first ability is also a fantastic way to spread counters, especially with cards like Abzan Falconer and Skatewing Spy