Basically I created this thread to give some insight to helpful things you can do with mysticism. Everyone just reply here.
1.) Purge Magic. This spell works great. If a mage is in protection you can easily remove it from him. I tested this, and apparently you remove the buffs in the reverse order of what the opponent casted them. So if you are doing a champ spawn and are worried about someone using this on you try casting Protection first, then something like Magic Reflection and then Reactive armor.
Also, something else about this spell. You can cast it about as fast as a 2nd or 3rd level magery spell. Don't you hate it when you dismount ninjas only for them to jump back into animal form and run off? Well guess what? This spell will knock a ninja out of animal form. It doesn't have any delay penalty as they can jump right back in it. This spell casts fast enough that if you run in a group 1 mystic should be able to spam this and keep this guy dismounted.
Anyways, I'll come back and add some more later.