Alright... Here we go horse.
He needs the Idol of Lunar Fury or the Idol of the Shooting Star. Preferably the first one, but the second will help.
If he has access to a draenai buff in raids tell him to drop the hit gem in his belt and pick up 23 spell power instead. He'll be capped with the Heroic Presence.
Crit gem in boots should be spell power.
Hit gem in pants should also be 12 spell power 10 spirit.
Get sons of hodir exalted and get a shoulder enchant.
30 spell power on bracers.
81 spell power on staff.
Get PVE gear and not PVP gear for ring and boots.
Drop innervate glyph and get insect swarm. With 2 piece t7 thats an absolute must have glyph.
His spec is actually really bad. He should have
this spec.
I'm assuming he's having some mana issues and he's picking up IIS when in fact having IFF will help his crit strike increasing his dps and increasing his mana regen since he'll be critting more.
Gems you use are as follows. 23 spell power gems and only two 12 spell power/12 spirit. The only time you go for a socket bonus is if you've got red/blue sockets.
He needs Flask of the Frost Wrym when he raids, and he should be using potions of speed during his lunar eclipse.
He also needs to drop one of his gathering professions, herbalism would be the best to drop and then pick up LW. This way he can fund his own way into 400 to pick up the spell power enchant to bracers.
This is when he also needs to start a death knight with herb/mining to fund his way into a secondary crafting profession. This will also help his gear. I suggest JC for the secondary since it gives a stupid about of awesome to your character.
Make him download the addon SquawkandAwe so he can watch his dots and his eclipse timers.
The way I start off a fight is such.
Trees > FF > MF > IS > Starfall > Wrath until eclipse procs > Starfire until eclipse procs > Wrath > so on and so forth.
You are now able to refresh your dots during eclipse phases but
ONLY when they fall off.
You will repop starfall when you are entering the end of a solar eclipse and are attempting to proc lunar eclipse again. Each time starfall crits it restarts your nature's grace proc which if you are at the haste soft cap of 400 will make all your wrath a 1.0 second cast giving you the best opportunity to proc eclipse again.
Have him look at
yours truly, so he can see the proper gemming/enchanting and a proper raiding spec if he ever goes into 25 man raiding.
I think that covers it. I hope.