39 - Get thread made from catgut or similar dead organic substances. Get a needle made from bone. Animate both. In any fight with enemy casters, have your friendly flying needle sew their mouths shut. If there are more animated threads than there are casters, have the needle start sewing eyelids, too. Don't need to be too neat, either, if you don't a more permanently blinded enemy. The animation on the thread is mostly just so that the needle can automatically be rethreaded with it, or you, wasting actions, but it can also be handy for you to then be able to 'see' your foes, by tracking the signature magic of your threads, and also allowing the thread to stay sewn in without the need for a knot that could otherwise be untied to free their lips.