Making scary plasma in a microwave with glass

So today, I'm gonna be making some scary-looking microwave plasma, which may or may not destroy my microwave.

WARNING: DON'T TRY THIS. Microwave plasma is extremely dangerous and can easily damage your microwave. This experiment was carried out in a controlled environment and serious injury can occur if performed improperly.

The glass used in this experiment has a chance to explode and is otherwise permanently compromised.