medieval fantasy can use more chemical weapon such as turd or fermented turd.
idk why they didn't think of loading literal shit onto trebuchet and use them as chemical artillery.
Iirc Mages too OP (CN), it was the modern players who thought of such a thing and created Shit Magic and Shit Spells, ie the magic to make feces (water) cannon and fart gales etc.
A branch of Conjuration was shown in the battlefield that day and it wrecked havoc.
Like you said, odd that no one in native was implementing it.