Both of these spells remove magical effects from the target.
Dispel magic has a reduced chance of working, and is considering an attack
spell.
Cancellation can only be used on allies, but is much more effective
and does not provoke attack. Unfortunately, the spells do not discriminate
between harmful and benign spells.
The chance of dispelling is based on the level of the spell. Permanent
spells (such as mobile sanctuary) are much harder to remove. Not
all spells may be dispelled, notable examples are poison and plague.
Note: Cancellation does not require a verbal incantation, so
it can be cast even when the caster is mute.
Syntax:
cast 'dispel magic' <character>
cast 'cancellation' <character>