Will be rolling things out gradually, but...

[@Abstract Proxy] For Vera's spells, it'd be best if you just specified what Vera herself can currently accomplish with her spells, rather than the entirety of a spell's capabilities and intricacies. For Symbol, the way the magic system here works is that a written spell needs to be completed in whole; you won't be able to later on add an extra bit of script onto a pre-existing written spell to turn it into a trap. For Shield, both spoken and written spells are a one-and-done sort of thing, so you wouldn't be able to pump more magical juice into a Shield that's already completed in order to bolster it enough to block attacks that are tougher than they appeared.