[Spells help] Magic Removal Spells

Syntax: cast 'dispel magic' <victim>
cast 'dispel magic' self (room dispel)
cast 'cancellation' <target>
cast 'remove compulsion' <target>

...

Cancellation has the ability to only remove harmful spell effects but it
has less effect on some spells than others. This is not an attack spell and
will only cancel harmful effects. While cancellation is good against many
common maledictions such as feeblemind, sleep, slow and weaken, it is not a
cure all. It has trouble removing compulsions that control the mind.

Remove compulsion is similar to cancellation in that it is not an attack
spell but it specializes in removing the compulsion effects that are hard
to eliminate with cancellation. Examples of compulsions include charm person,
domination, confusion, chaos, control undead and hold person.

Dispels may also be useful when fighting against animated or conjured
creatures. Some spells cannot be dispelled such as poison or plague, which
have dedicated curing spells, or magma spray which is non-magical once cast.

So in other words that change completely messed up the Paladin's advantage over a Necromancer. Holy Word costs to much to use for it damage. I always used to use it for the cancellation affects. How am I supposed to beat a decently prepped necromancer now then?(rhetorical question)

There is a possibility for holy word to help, its just much less than the chance you'd get with remove compulsion.

A

How exactly does it work? I know about the damage stuff, but the cancellation and dispel magic affects seem never to land. I have yet to dispel control undead. It seems that it used to if my mind still serves me it used to. Also I'd think that affect should have a higher success rate dependent on the aura difference. Any help on understanding would be appreciated.