Bloom and Decay (Healer): Frost Staff Backbar - Necromancer Построй PvE - ESO

This is a pretty straight-forward build. The frontbar contains the major healing spells you will use, while the backbar has the utility spells. Use Frost Staff (if your tank does not use one) for extra defensives/shields to your group, otherwise Lightning Staff for keeping concussed/off balance on the enemies.

The 5 piece set bonus of Winter's Respite will proc from both Elemental Blockade and Agony Totem, adding a great extra heal to keep your group at max HP and having the Spell Power Cure bonus up as much as possible. Try to keep Summoner's Armor up at all times, reduces the cost of your Intensive Mender and greatly reduces the damage you take, allowing you to focus more on healing your group.

Ultimates can be changed depending on your group's necessity: 

- Reviving Barrier (shields for your whole group + they get healed for 15 secs while it is active) - Alliance War -> Support skill line

- Renewing Animation (instantly revives up to 3 group members) - Necromancer ->Living Death skill line

- Aggressive Horn (10% max Stamina & Magicka for 30 secs for your group) - Alliance War -> Assault skill line