Couterstrike

The orc priests didn't notice anything, but the skeletons they summoned were starting to turn green. To be fair, they were inside a cloud of poisonous green mist, so it wasn't all that easy to tell.

"Why can't we find him?" one of them called out.

"What's going on? I'm poisoned!" another cried.

"I'm poisoned too! Dear spirit! What is this substance?"

"What, what? No, stop! Guys, I'm freaking out!" 

At this point, the dust and poisonous mist had grown a lot thinner. It was starting to become easier to see. The grey-hooded priest looked around himself. He saw that a few priests were already on the ground. 

The ones that fell looked like they were having a seizure. It's not just the priests. Many skeletons weren't moving at all. The soul fire inside their heads looked like they would go off at any moment.