Tempest Shield and spell damage

So I've been thinking about some new builds lately, and I just can't figure it out: I'm sure tempest shield benefits from lightning damage nodes, but does it also benefit from elemental damage or spell damage ones?

Yep! It's a spell, so it's boosted by spell damage nodes, and it deals elemental damage (meaning either fire,lightning or cold), so it's also boosted by elemental damage nodes.

Could be something like this?
I'm not sure about Inner Force but I think that Tempest Shield would benefit from it. If you find a good 1h mace with lightning damage you can go melee. Other fitting skill should be elemental weakness, ground slam, heavy strike, lightning warp, lightning strike, spark, shield charge, wrath and maybe others. Spark and Lightning Warp work well with totem support.

I played as a caster Templar using Tempest Shield, and it was a pretty fun build,

Here the build I used, I learned a lot from using Tempest Shield, so here some tips:

-The Chance to Shock node is very important, combine it with Elemental Proliferation and you can stack 3 Shock layers on all enemies around you easily.
-Enduring Cry is Tempest Shield's best friend, since not only it lures all enemies to you, but greatly increases your physical and elemental resistance.
-Molten Shell is very useful, giving a way to quickly finish enemies already damaged by Tempest Shield.
-Its important to link a Iron Will gem in both Tempest Shield and Molten Shell; both skills don't get affected by the cast speed penalty, so you get a +50% spell damage for free.

Finally, Spark is probably your best bet against spellcasters, combined with the Chance to Shock nodes it becomes really powerful.