Shutdown Mesmer

A Shutdown Mesmer is a Mesmer (obviously) who focuses on stopping, or "shutting down" enemy spells. They use spells like Power Leak, Power Drain, Guilt, etc. to cause enemies trying to use spells to be interrupted.

Shutdown Mesmers are an Elementalist's worst nightmare, as they can stop his spells, drain all his energy, and render him useless until his energy comes back.

Most Shutdown Mesmers focus their time on stopping Elementalists, but if they are good enough and can click the right hexes quickly, they can prove effective in stopping Monks from healing their allies. For this reason, Mesmers are widely considered the hardest and most skillful players.