Blood Mage (Magicka Healer)
Main Role: Healer
Health, Magicka, Stamina
Weapon 1: Destruction Staff
Destruction Staff SkillCrushing Shock
Nightblade SkillRefreshing Path
Mages Guild SkillStructured Entropy
Undaunted SkillOverflowing Altar
Mages Guild SkillInner Light
Nightblade SkillVeil of Blades
Weapon 2: Restoration Staff
Restoration Staff SkillHealing Springs
Restoration Staff SkillRapid Regeneration
Restoration Staff SkillBlessing of Restoration
Nightblade SkillSiphoning Attacks
Mages Guild SkillInner Light
Nightblade SkillSoul Siphon
Gear and Item Set Info
Currently I use 4 piece Martial Knowledge, 5 Piece Healer's Habit, and 2 Piece Seducer. Still working on my ideal set up which the final result will consist of 5 Piece Worm's Cult, 5 Piece Healer's Habit, and Master Staves. I do realize there is new gear out with IC and Orsinium, however I do not know the impact of those sets currently, therefore I will stick with the above mentioned sets.
This build revolves around the upkeep of HoTs or Heal over time spells. Use Blessing of Restoration when heavy DPS is taking place on the group, otherwise stick to healing over time effects such as Healing Springs and Rapid Regeneration and Overflowing Altar. Refreshing Path is extra and could be swapped out for something else more useful, such as Elemental Drain. Healing Springs can also be replaced for another Siphoning skill in order to increase the healing you put out, due to the Soul Siphoner passive, 3% healing increased per Siphoning skill slotted. Use HP/Magicka increase food to maximize your Magicka values, more magicka means higher healing outputs. Potions aren't needed as Nightblades have innate magicka regeneration, however Magicka Potions are always nice if you find yourself running a little low on magicka. Strengths of this build is pretty simple more Siphoning skills on your bar without getting rid of Blessing of Restoration at the very least, means stronger heals. The only real weakness to this build is that Blessing of Restoration requires you to think on your feet, and actually "AIM" the spell at your group members in order to heal them, with practice it's actually not hard to do. In fact I heal better than most Templars on my Nightblade healer. Another weakness that you could say affects this build is lack of Stamina regain to the whole group, this can be solved by utilizing the Master Restoration Staff. I am fully aware that the stamina tick is only on the first tick of Healing Springs or more accurately Grand Healing, however you can spam Healing Springs and get that first tick every time, thus giving a bit more stamina regain to the party. As for the magicka regain that Templars can offer via Rune Focus, that can be generated from Worm's Cult gear by reducing the overall magicka cost of spells by 8%. Not to mention Rune Focus would require your magicka people to actually stand still inside it, which most fights require you to move around, making that spell very situational based if not the Templar himself.
Champion Point Tips
There aren't really any "tips" per say for Magicka Nightblades. With that said there are Champion Point "requirements" seeing as the Magicka Nightblade absolutely CANNOT go Hybrid between Healing and DPS. The reason is simple. In order for Magicka Nightblades to deal decent enough DPS to be on par with the other classes they would need to invest enough points into Thamaturge which is found in the Mage-Ritual tree, to gain the maximum 25% magic damage increase. Only then would a Magicka Nightblade be able to do enough DPS to compare to the other classes, the same exact thing can be said of the Magicka Nightblade HEALER build. This build being that of a Healer build, will require enough points spent into Blessed from the Apprentice to increase your Healing up to 25%. With that said other champion points you will want/need are Elfborn for spell crit, yes heals in ESO do in fact crit, so as many points into Elfborn as you can for higher crit. I, myself, do not have any points into Atronach or Ritual on my Nightblade as I plan to do no DPS whatsoever, with that said all my points have gone into the Apprentice, Blessed and Elfborn. Eventually I will venture into the other 2 trees as the CP cap gets increase since it's maxed out at 501 currently with the Orsinium DLC. Other CP you will want/need are Magician from the Tower for reduced Magicka cost, and then Arcanist for more Magicka Regen from the Lover cause you know more Magicka Regen can't hurt!! As for the Warrior, that all depends on how tanky you wish to be. For instance my own Nightblade has at least 30 points into Spell Shield for more Spell Resistance and at least 10 into Elemental Defender, since he's a Vampire. I do plan to put points into the physical defense aspects but for now I have been focusing on reducing spell damage I take as a Vampire, and yes Fire Damage is counted as Spell Damage, therefore Spell Resist > Fire Resist.