Me/E Burden Pressure

This build has incredible energy management, and is extremely versatile in the enemies it can target.

Me/E Burden Pressure

Fast Casting 16 (12 + 1 + 3)
Illusion Magic 13 (12 + 1)

Preferably Enchanter's Armor, with a 20% HRT Wand & a 20% HRT Focus, both with your preference of energy or health mods. Note however that casting time mods are a waste of space for this build. Also note, that a negative energy set would be helpful, but be careful not to waste a burden during the switch. Another note, this equipment provides 36% possible chance of 50% reduction of illusion magic spells. I'm not familiar with how Mantra and this would stack, but it makes sense to me that it would be 50% of the remaining 50%, which would result in a 75% recharge reduction for that spell. This is excellent, considering that a third of the time, you're burden will recharge at roughly the same time the hex would naturally end.

Glyph of Lesser Energy / Purge Signet
Mantra of Recovery
Kitah's Burden
Ethereal Burden
Conjure Nightmare / Conjure Phantasm
Frustration
Clumsiness / Web of Disruption
Power Return / Resurrect of Choice

The cast sequences are as follows:

VS. Melee: GoLE -> Burden -> Conjure -> Web (in response to self heal) OR Frustration (spam)
VS. Caster: GoLE -> Burden -> Conjure -> Frustration -> Power Return

Power Return is absolutely necessary for taking down monks, and low cost spell spammers. Keep in mind that with FC 16, Power Return will refund 5 energy, meaning that it is extremely likely that they will still have lost energy.

You can benefit your party most by targeting Healers, then Tanks/Sins, then misc. spellcasters. Sins are a serious threat however, because they possess many spammable stance breakers, and the build's energy management collapses without Mantra. That being said, obvious weaknesses are Blackout, Diversion, etc. Ironically, most threats come from Mesmers.

I left a few open possibilities for this build, you can pursue the /E route for additional energy management (I prefer this one, so you don't start off a battle with no energy, as you're waiting for the first burden to trigger). However, if you switch out the expensive Conjure Nightmare for it's lesser cousin, Conjure Phantasm, you can afford to switch secondary to /Mo for Purge Signet (the energy loss is not much of an issue, especially with well timed burdens, and a negative energy set), and a hard res.

>_> You have to love that Purge Signet gets around things like Backfire, which was the original reason I considered it

Also, Web and Clumsiness are essentially identical with respect to cost/recharge, however, it is up to preference. To eliminate another weakness of this build however, I like Clumsiness. Power Return is more than enough to take care of any caster. Clumsiness's apparent synergy with Frustration is also a plus.