The Oakensoul Vampire Lord | Immortal, Undying, Enduring. - Necromancer Construye PvE - ESO

Our entire goal is to generate Ultimate as fast as possible, while mitigating and healing through damage that comes our way. This is an extremely selfish build, but you will be able to be the last man standing and when using your ultimate, hopefully bring your entire team back. 

High Elf is very good for taking even less damage and having some extra resource control, whereas Nord is much more tankier and easier to generate Ultimate, however little.

You can swap Inner Rage with Blood for Blood as you see it necessary. Blood for Blood is good for overworld clearing or fighting bosses alone, but it may be wiser to use Inner Rage overall due to reduced costs, grouping up enemies for your Ultimate and keeping attention. It's personal preference. 

The intention with the Vampire Lord set is to use as many of the Vampire abilities as possible, so keep that in mind when swapping things out. They need to either cost nothing - or cost very little, so as to not destroy the very little resources you have with this build.

Stage 3 - or Stage 4? Your call. Stage 4 makes resource management easier, especially in Combat. Stage 3 may be better for Overworld travelling simply due to the health recovery not being 0. You can swap skills out just to self heal if truly needed.