This would be an evil tactic if it works (not high enough to test it).

Charm your opponent and make them attack the nearest Hill Giant (or other
big bad monster). Or even have the caster attack greens and use up all his
mana.

Or can you Levitate both you and your Charmed PC? Cruise over some lava or
to a good sized drop, then let the charm wear off. Ouch.

Or quickly run into Lava, do a /pet guard here, then jump out of the lava.

Charm is one of the most powerful PvP spells in the game.

Wayne