How would you like to live forever?

The aim of this Revenant build is to outlast your opponents. Hitting 244% strength gives you 14 charges of Mesmer Skin, which is a good recast-able source of invulnerability. Plus you get free thralls every time a charge gets used up, and thralls are a good for a distraction, saving you charges as enemies target your thralls instead of you, and fairly good damage when they leave behind pillars on death. Reave, while normally a useful ability, doesn't serve as much of a purpose here since you shouldn't be taking damage in the first place. So instead I've replaced it with Shooting Gallery. This is an extra layer of defense via disarming enemies, giving you time to refresh your Mesmer Skin charges, as well as a 61% damage boost while it's active. And Danse Macabre does respectable damage, with minimal cost thanks to running neutral duration and 175% efficiency.

Weapon choice is entirely up to you, so go nuts with that damage boost. As for companions, I personally went with a [Panzer Vulpaphyla] for an equally immortal companion capable of armor stripping enemies and spreading viral spores. If you're having energy issues, running a [Sahasa Kubrow] or [Dethcube] with the [Energy Generator] precept are good options.