So I just completed the mage tower last week and thought I'd go over it since there's not exactly a lot of advice for it out there.
My item level was 902 and I'm an LFR hero so don't think that it takes a super-hardcore raider to do it. :-)
Here is the spec I used:
http://www.wowdb.com/talent-calculator#CVWL
Of all the talents only Repentance is mandatory. Everything else can be used with smart play, although if you figure out how to avoid waking up Sygrin while using divine hammer please let me know. :-P
Legendaries I used:
http://www.wowhead.com/item=132444/p...cs-magnum-opus
http://www.wowhead.com/item=137086/chain-of-thrayn
Prydaz is amazing for this fight. There are tons of ways you can screw up and having that extra HP shield is godly for when you overshoot the gap in the valkyr, miss a rune or are slow on moving away from the ax guy while he's berserked or doing ballerina practice or while there's piles of green goo everywhere.
Flask I used:
http://www.wowhead.com/item=127850/f...thousand-scars
I wanted the extra HP to increase my chances of surviving screw ups. This works well because Prydaz is increased by total health.
The one macro I used that made my life easier and probably the whole thing possible:
#showtooltip
/use [@focus,exists,nodead][]Repentance
How I executed the fight:
Prepotted with a potion of prolonged power.
Hit Sygrin in the face and go to the caster.
Pop wings, do my best to blow up the caster using divine storm to hit all three mobs.
When the ax guy does his enrage I stunned him, then I ran away.
To make kiting him easier use Hand of Hinderence - which I completely forgot I had. Like I said, I'm an LFR hero.
You'll be running away a lot in this fight so by all means do your best to maximize your dps and target uptime but your priority is to keep Sygrin asleep when she's green and stay out of the shit.
Soon some runes will spawn. Run over them.
Sygrin will tend to be a dick and go green at probably the 2nd set of runes that will spawn, you can either repent her as she goes green or you can even do it a bit before hand. There may be timer addons for the fight but frankly I think they are all off and the fight timing is done through multiple triggers of both time and HP level.
Either way repent her.
While she is repented make your way back to the caster and hit him in the face.
You'll have to move away from him most likely to take care of runes and for gaps in the valkyr. Those two mechanics spawning together are the biggest cock block in this fight so you'll just have to deal. You can typically bubble through at least one shit show.
If ax guy starts spinning just hit him with your stun. You can also run away or pop your blessing of protection. The damage is all physical so you'll cruise right through it.
If he chases you hand of hindrance or ride your pony away from him and keep moving.
Eventually you'll hit the soft enrage. This is around 20% HP or so on the caster. At this point runes will stop appearing on the floor but the valkyr charge comes more regularly and you'll also have to pop the caster's bubble regularly.
In this stage there are two ways of dealing with Sygrin. You can either keep her repented and try fighting away from her or you can let her out for added damage - remember your damage is mirrored among all three so you'll be able to get a lot of damage in even through the shield with divine storm. The troublesome part is her spear throw ability hits for a half million damage and leaves green crap on the floor. Green crap that of course the caster will stand in because he's a dick like that.
At this point use drums if you have them and your extra potion then just go to town on the caster. Very quickly you'll kill off the ax guy. If you can keep burning down the bubble on the caster while avoiding all the crud on the floor you'll soon get one of the coolest skins in the game.
Only other tip is that apparently the healing from Justicar's Vengeance doesn't work if you use it while the target has an absorb shield up, so target swap to Sygrin or the ax guy for healing. Also you can get a Flash of Light off without too much trouble so don't be afraid to start casting it even if you're above 50%.
If you take one thing away from all of this just let it be this macro:
#showtooltip
/use [@focus,exists,nodead][]Repentance
I cannot stress how much easier that macro will make your life for keeping Sygrin under containment. Just set her as your focus and hit the button.
I look forward to everyone telling me how wrong I am. :-)
https://worldofwarcraft.com/en-us/ch...onidas/bernice
Edit: Added armory link to show I had achieved it.