Oh, Player. What a relief you’re here.

I was just looking for someone to send to the Gelkmaros Defence Base. Would you do that for me?

Help Agent Mastarius in the Defence Base.
If the Vorgaltem Citadel and Crimson Temple are occupied by the Elyos and the Agent Mastarius intervenes personally, your help will be needed.

Ah, that’s not to say you should fight by his side. Of course, that would be a great help, but you should deal with the blessing in Mastarius’s Aether Concentrator so the agent can focus on the battle.
Find Cenvezo and purchase Blessing of Devotion before heading to the Gelkmaros Defence Base.

When Mastarius is under attack from our enemies, channel the Blessing of Devotion into Mastarius's Aether Concentrator. With 100 blessings, the exarch will summon the Empyrean Avatar and lay waste to these encroaching mongrels.

Channel the Blessing of Devotion at least 10 times, and we will purge Gelkmaros of our enemies in the name of Lord Marchutan! Go now! There's no time to waste!
Glory for Asmodae!

I still don't know how we lost the Vorgaltem Citadel and the Crimson Temple, but it's good to know that we have Daevas like you to prevent us from losing Gelkmaros altogether.

I shudder to think what would have happened if you weren't supporting Mastarius. Here, take this--you've earned it and more.