Tempest - Staff Support

This build decent if your team can peel for you (preferably with another support such as blood scourge or firebrand), otherwise it folds quite easily when focused as it lacks many of the self-peel that d/f tempest has, and it's still outclassed by firebrands.

Being squishy and lacks edge that Firebrand offers such as Stability, on-demand stunbreaks, and Resistance--pretty much everything from Tome of Courage.
However, this build has something Firebrand does not: auras, arguably more ranged support, and geyser rez which is actually very nice. Also has Mist Form that can make more awesome plays.
Edit: better than expected, moving it up

Nathanel doesn't understand what makes this one so good. Staff tempest has more condition removal and AoE healing than any other build bar firebrands, but the rez is better than FB's. For ranked this is 5/5, for tournaments 4/5.

I see no reason as to why this build should be played. Its an obselete mock auramancer. The protrection,regen and more available condi cleanse on the standard auramancer offset its niche ressing capabilities. If u want range u are better of playing auramancer with staff and or make some slight adjustments.
Its not a weak build. But rather a unneeded build.

Staff Tempest is making a soft comeback in ranked. Not as good as a Firebrand, but it's a decent support with a lot of healing, damage mitigation, cleansing and even rez power.
Great chill output, ranged support in heals, auras, condi cleanse.
The geyser rez is less than a second and on very low cooldown, almost guaranteed even under heavy pressure with mist form.
Considering easy access to chill and pretty mobile, this build can kite quite well and I don't feel so squishy either.