Alter Aeon Rules of Conduct

Rule 3.2 - Thou shalt not cast annoyance spells

Casting spells on or about other players with no purpose other than to
cause irritation or grief is a punishable offense.  Healing and
beneficial spells are generally not considered an annoyance unless
they break the anti-spamming rules.

This includes casting 'dispel magic' on other players without consent.