[Endoperez]

Staff of Storms does not hurt you in any way if you only use it with Warlocks. They will not cast Fire spells, and Storm doesn't hurt your other troops at all. But using SoS with your Salamanders and Dragons would be a bad idea... Maybe not if you would have one casting Fanaticism all the time, as that is not a fire spell, but he would propably cast few attack spells and go unconcious.