Are Poison Aura Summons Worth It?

[thejeff]

They can also work well as blockers for archers and/or mages.

With the poison troops in the center and the archers on the rear flanks, they avoid the poison clouds. If the fight lasts long enough for the archers to run out of arrows and charge into melee, you're in trouble, but if you're relying on archers and they run out of arrows you're in trouble anyways.