As experiments and spells for magi tend to go haywire irregularly, I thought it might serve a prudent wizard to have some magical protection. The current Ars Magica Verditius wizard I’ve been writing has a specialisation in bronze, and many bronze based spells, so a bronze ward seems appropriate. A side benefit of this spell if it was enchanted into a device for use in a lab might be to either affect the specialisation bonus or the safety score (or both) for a magi’s lab.
Ward Against Bronze
Rego Terram 30, R: Touch, D: Ring, T: Circle
This spell creates a circle that no object with a bronze component may enter or leave. These objects may exist within the circle as long as they were there when the spell was cast.
(Base 5, +1 Touch, +2 Ring, +2 affect metals)
(As item +5 for 24 uses per day, for final enchantment effect level of ReTe 35)
Find more spells for Ars Magica in my grimoire of spells.