I'll share my experience, since it seems somewhat different than most here.
Attempt 1 : Start the fight - round one aggro and kill magister swordsman. Round 2, Alexander moves into the middle of my party and one shots two of them with his melee attack. I give up
Attempt 2 : Start the fight - round one aggro and kill magister swordsman, then move back a bit. Round 2, Alexander, gheist, and a magister don't quite reach me. Use teleport to group them up, then you AOE magic to strip their armor. Spend the next 5 turns with them perma stunned / frozen / petrified / etc, while I kill them all. Combat ends without the other two magisters being involved.
Save at this point. Thinking I have the battle won, I advance into the courtyard. The battle starts, and the mage one shots my entire party.
Reload. Teleport up to the ledge behind the mage, battle starts with only half my team up there. His meteors somehow mostly miss, so I bless the fire and quickly kill him. At this point, a giant worm shows up out of nowhere, CCs the one party member (rogue)still on low ground. The lone remaining magister enters the battle, alternating between killing my poor permastunned rogue and the worm. The rest of my party heals up and blasts the worm. Its CC immune, but its damage is lackluster. It teleports up and down a few times (long after the rogue is dead), but only manages to petrify once. After a few rounds it goes down easily. I revive the rogue and finish the last magister.
Thoughts - This battle really shows the weaknesses of the no armor = 100% cc system we have now. Alexander goes from being able to solo 3/4 party in one turn to absolutely useless after removing his 150 magic armor with 2 spells. This trivializes almost the entire fight. In fact, in order to make the other large enemy (the worm) scary, its made immune to all cc. I really don't like either option very much - in one, your just slapping on a bunch of arbitrary rules, different from the rest of combat you encounter, to make cc not work so the battle is actually hard. On the other hand, cc is ridiculously effective in the standard system, so I can see the appeal...
Also, the magister mage being able to one shot my entire team (making it more dangerous than Alexander OR the worm) feels wrong. If an enemy has an ability that strong, I think we should be warned somehow...
