Dustin thought for a moment. Everyone else was so....violent in their choices for spells. He raised his hand and offered, "I mean, I don't know what the incantation would be for it, but what if there was a spell that created a cloud of stinky gas? Because I'm pretty sure that would upset my nose and incapacitate me if that happened."

He realized what the implications of that were, and quickly added, "I mean...it wouldn't affect me because I'm immune to smells but I'm sure OTHER people wouldn't like it."

There. That would probably prevent anyone from using that on him.