Spear Mastery: 2+1
Signet of Synergy - Target other ally is healed for 40-100 Health. If you are not under the effects of an Enchantment, you are also healed for 40-100 Health.
Anthem of Flame - For 10 seconds, the next attack skill used by each ally within earshot also causes Burning for 1-3 seconds.
Song of Restoration - For 10 seconds, the next time each party member within earshot uses a Skill, that party member gains 40-88 Health. This is an elite skill.
Aria of Restoration - For 10 seconds, the next time each party member within earshot uses a Spell, that ally gains 40-100 Health.
Finale of Restoration - For 10-35 seconds, whenever a Chant or Shout ends a target ally, that ally is healed for 15-75 Health.
Mending of Refrain - For 20 seconds, target ally has +1-4 Health regeneration. This Echo is reapplied every time a Chant or Shouts ends on that ally.
Stand Your Ground - For 10-30 seconds, all allies within earshot receive +24 armor when not moving
Res Signet/Signet of Return/Sunpear Rebirth Signet - For when a partmember dies
Suggested skills for your heroes:
Watch Yourself / Go for the eyes / Shields Up / Defensive Anthem / Energizing Finale / Incomming / Stand Your Ground - any shout
How it works, start with casting Mending of Refrain on everyone, and keep this going by casting Song of Restoration and Anthem of Flame constantly. When a fight starts, keep recasting SoR/AoF/AoR constantly and cast Finale of Restoration on whoever is taking the most damage, same for the Signet of Synergy. Stand your ground should be used whenever it's up/needed.
I believe this build to work - extremely - good. Especially if you have a henchmen with a couple of the suggested skills (watch yourself and shields up are reallllly nice to have around). This build was enough heal to only pick one monk for the final missions in NightFall, which seems like a good deal to me. It keeps everyone on full hp unless there is a heavy spike, in which the monk can spikeheal. You won't really be attacking and constantly using spells, which is why I don't use any Adrenaline skills, even though some of them would fit in really well.