richip wrote:
It's level is so high, it attracts extra difficult creatures, yet it's not capable of killing some of them, even one on one. Worse, it seeps a lot of XP.
I always thought about this as a big advantage -> double XP time!

With the use of mass destruction spells you won't even notice the little XP loss caused by your summon.
richip wrote:
Care has to be taken not to bring it into high AB KD territory as it has a Discipline of 15.
Well done you found one of it's weakness. But nothing to worry. Support your "Greater Mellus Defender"**. Do some experiments with disable spells or save-or-die spells. If you disable 2 of 3 monsters your summon has much better chances to win the fight.
** formerly known as "Greater Dwarven Creation" or green golem, epic summon)
richip wrote:
It's AC is so high, most creatures' AI decide they'd target the caster.
Do you fear the darkness? (a little hint)
richip wrote:
My question to you is: in what situations do you think that summon is tactically or even strategically beneficial?
Tuecer already mentioned most hightlights. Maybe one thing to add here: The safest place is in the back of your epic summon (if it is not surrounded by foes, of course). Take advantage of the area and the environment. Even if your epic summon can't kill the monster it is very good for standing in the way

richip wrote:
Side note: I think it was mentioned somewhere that SN might create a forums for classes (or maybe mages in particular) to discuss strategy and tactics?
I'm sure you will find such a thread in each realm forum. But feel free to start one.