Thanks, I believe the M*A*S*H quote was “Sulfa, so good.” They were discussing the stock level of various drugs; sulfonamides, a class of drugs that consists mostly of antibiotics.
Well since ABRACADABRA is not the killing curse I don’t see how it would. AVADA KEDAVRA on the other hand might be of some concern, in the hands of a muggle child.
With enough added webs it would be multiplying. Multiplication is just a form of addition after all.