Campanella thought for a moment.
"We could put a little cantrip on your weapons to give them a better balance and edge*." He offered. "A quick Ritual before you go should suffice, given we know the numbers and have the time in advance." He knew from past experience that rituals were not his strong suit.
"Defensive structures would require someone versed in Matter to be there with you. A few transmute and transmogrify spells could do it; not sure if they would be effective but they could slow them down or let you take out a few clusters of these... Things."
*Campy is referring to Alter Accuracy