That would be TC using up some of his pearls and casting Armageddon. I would have preferred that TC stuck to wishing for Mandahas to lead his armies against me.
Unfortunately it appears Agartha has been heavily summoning and casting rituals that are not Astral or Blood. This feeds pearls through the Nexus to Tien Chi, who then proceeds to nuke the world. Agartha's actually pretty well set up to handle a few Armageddons, because his units have high HP. I don't know how his income actually managed to go up this month though.