How does this interact with multiple artifact slots?
Say, for example, I want to CwD up while also activating Ark in my temple. Ark's "negate and underdeck a curse or idol" isn't optional, so if there's no other idols/curses, when I activate Ark in my temple it'll underdeck CwD. Can I deactivate CwD (perhaps saying "deactivating all arts"), activate Ark on my temple, then activate CwD on my art pile?
On a somewhat related note, there's nothing that says you CAN'T reactivate something that was deactivated that turn, right (since otherwise U&T would lock you out of reactivating)? So if I deactivate CwD, play TC stuff, then put a soul in Chorazin, I can activate CwD on Chorazin, correct?