Entities in Heroes 5.

I also want to say... The more TREANTS in the army, the stronger the Elven defense! And maybe a treant is just a modification of an ent.

More precisely, the defense consists only of oaks. There's no one left to defend with... Everyone has run off to attack, and someone needs to protect the archers. But still, I only build ents as a last resort if I don't have enough resources for dragons.