You need a tank (book carrier) and a few monks, then lots of rangers
FOW Barrage Bomb Build
Profession(s):
(at least 1) Ranger/Necromancer
then Ranger/Whatever
Type: PVE
Attributes:
Expertise: 13 (11+2)
Beast Mastery: 9 (6+3)
Wilderness Survival: 3 (2+1)
Marksmanship: 13 (12+1)
Skills Set:
Barrage [Elite] (Marksmanship)
All your preparations are removed. Shoot arrows at up to 6 foes near your target. These arrows strike for +14 damage if they hit.
Energy:2.4 Cast:0 Recharge:1
Lightning Reflexes (Expertise)
For 10 seconds, you have a 75% chance to "evade" melee and projectile attacks, and you attack 33% faster.
Energy:4.8 Cast:0 Recharge:45
Troll Unguent (Wilderness Survival)
For 10 seconds, you gain Health regeneration +4.
Energy:2.4 Cast:3 Recharge:10
Whirling Defense (Expertise)
For 18 seconds, you have 75% chance to "block" attacks. Whenever you block a projectile in this way, adjacent foes take 10 piercing damage.
Energy:4.8 Cast:0 Recharge:60
Favorable Winds (Marksmanship)
Create a level 9 Spirit. For creatures within its range, arrows move twice as fast as normal and strike for +6 damage. This Spirit dies after 134 seconds.
Energy:2.4 Cast:5 Recharge:60
Resurrection Signet ()
Resurrect target party member. That party member is returned to life with 100% Health and 25% Energy. You may use this Signet only once per mission.
Energy:0 Cast:3 Recharge:0
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At least one ranger needs to bring these skills
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Putrid Explosion (Death Magic)
The corpse nearest your target explodes, sending out a shockwave that deals 24..101 damage to nearby foes.
Energy:10 Cast:1 Recharge:5
Edge of Extinction (Beast Mastery)
Create a level 6 Spirit. For creatures within its range, whenever any creature dies, Edge of Extinction deals 36 damage to all nearby creatures of the same type. This Spirit dies after 102 seconds.
Energy:2.4 Cast:5 Recharge:60
Summary
This is a variation on one of the many barrage builds, that simply packs the EoE bomb for extra punch, putrid explosion then puts the final nail in the coffin, for any stragglers.
For those unfamiliar with barrage builds.
The Tank, grabs the book while the monks keep him alive.
The Rangers then spam the hell out of barrage and one ranger drops EoE. When the first monster goes down, add putrid explosion.
Rinse and repeat.
