This build combines mesmer shutdown and energy management with restoration magic. It's a good choice when you not only lack healing, but also shutdown. Although the energy management is usually worse than a necromancer healer's that's compensated by the additional shutdown and thus reduced need of healing.
You activate Spells and Signets 46% faster. (No effect for non-Mesmer skills with a cast time less than 2 seconds.) In PvE, the recharge time of your Mesmer Spells is reduced by 39%.
FactionsMesmer. Fast Casting 13Psychic InstabilityElite Spell Interrupts the target foe's action. If that action is a skill, that foe and all nearby foes are knocked down for 4 seconds. (50% failure chance with Fast Casting 4 or less.)50.112
FactionsRitualist. Restoration Magic 12Mend Body and SoulSpellTarget ally is healed for 96 Health. That ally loses one Condition for each spirit within earshot.5¾3
FactionsRitualist. Restoration Magic 12Spirit LightSpellTarget ally is healed for 156. If any Spirits are within earshot, you don't sacrifice Health.17%514
FactionsRitualist. Restoration Magic 12LifeBinding RitualCreate a level 11 Spirit with 220 Health and 68 armor. When this Spirit dies, all non-Spirit allies within its range are healed for 6 Health for each second this Spirit was alive. This Spirit dies after 20 seconds.10¾20
Drain EnchantmentCoreMesmer. Inspiration Magic 10Drain EnchantmentSpellRemove an Enchantment from target foe. If an Enchantment is removed, you gain 14 Energy and 93 Health.5220
Waste Not, Want NotEotNMesmer. Inspiration Magic 10Waste Not, Want NotSpellIf target foe is not casting a Spell or attacking, you gain 11 Energy.5¼15
Leech SignetCoreMesmer. Inspiration Magic 10Leech SignetSignetInterrupt target foe's action. If that action was a Spell, you gain 11 Energy.¼30
Hex Eater SignetFactionsMesmer. Inspiration Magic 10Hex Eater SignetSignetTarget touched ally and up to 4 adjacent allies each lose one Hex. You gain 3 Energy for each Hex removed this way.125
Variable skill slot 2:
Weapon of ShadowFactionsRitualist. Restoration Magic 12Weapon of ShadowWeapon SpellFor 7 seconds, target ally has a Weapon of Shadow. Whenever that ally is struck by an attack, that ally's attacker becomes Blinded for 5 seconds. The next 2 times that ally hits with an attack, his target is Blinded for 5 seconds.10120
Protective was KaolaiFactionsRitualist. Restoration Magic 12Protective Was KaolaiItem SpellHold Kaolai's ashes for up to 51 seconds. While you hold his ashes, you gain 10 armor. When you drop his ashes, all party members are healed for 70 Health10125
RecoveryNightfallRitualist. Restoration Magic 12RecoveryBinding RitualCreate a level 11 Spirit with 220 Health and 68 armor. Conditions on allies within range of this Spirit expire 44% faster. This Spirit dies after 54 seconds.15¾30
Death Pact SignetNightfallRitualist. Restoration Magic 12Death Pact SignetSignetResurrect target party member with your current Health and 83% Energy. The next time that ally dies within 120 seconds, so do you.312
Flesh of My FleshFactionsRitualist. Restoration Magic 12Flesh of My FleshSpellLose half your Health. Resurrect target party member with your current Health and 17% Energy.54
Variant:
In some party size 4 areas with many gargoyles (Ascalon) or plants (Istan) it may be advantageous to replace Psychic InstabilityFactionsMesmer. Fast Casting Psychic InstabilityElite Spell Interrupts the target foe's action. If that action is a skill, that foe and all nearby foes are knocked down for 2..4..4 seconds. (50% failure chance with Fast Casting 4 or less.)5¼12 with Expel HexesFactionsMesmer. UnlinkedExpel HexesElite SpellRemove up to 2 Hexes from target ally.518 to remove hexes such as Lightning SurgeCoreElementalist. Air Magic Lightning SurgeElite Hex SpellAfter 3 seconds, target foe is knocked down and struck for 14..83..106 lightning damage, and has Cracked Armor for 5..17..21. This spell has 25% armor penetration.10110 and Crippling AnguishCoreMesmer. Illusion Magic Crippling AnguishElite Hex SpellFor 5..17..21 seconds, target moves and attacks 50% slower and suffers -1..7..8 Health degeneration.5112 quickly.
Monk
Necromancer
Ritualist