It might be a good idea to break down 'permanents' into various types. Something like:
Items = weaposn and shields (and any other slots if ever implemented, like rings, helmets, etc)
Quanta Sources = pillars/towers, marks, and pendulums, and any future quanta generators
<name unsure> = A nonpillar/pend/mark permanent
That way, we can have, for instance, something like a Water spell called Rust that destroys an 'item', or an air spell called Tornado that destroys a permanent other than items/quanta sources(whatever we call the <name unsure> category), as two simple examples of cards that might give balanced PC to other elements, without requiring an essay explaining what it can and cannot target.
