Loadable trap devices for trebuchets, only a few types of which Baroness Victory permits under the magic ban.
Trebuchets in this war fire trap modules rather than pure explosives, and which modules are legal is an adjutant's call. Baroness Victory would allow the The Princess Posse only a few types into their trebuchets, and Dazzlers were among them — a combination of alarm and spotlight trap, technically non-offensive under the Offensive Magic Ban.
The restriction shaped the entire opening barrage. Instead of trying to blow up trenches already layered with anti-explosive fortifications, The Trebuchet fired four salvos of Dazzlers into The Craters to blind and deafen the defenders, while the enemy's own Artillery Batteries worked around the same rules by lobbing rocks packed with fog, poison, and other non-magical payloads.
Self-contained trap devices sized to be loaded into trebuchet payload baskets.
The war's legal artillery ammunition, tightly restricted by adjutant ruling.