"Necropolis" - changes to creatures of levels 6-7.

You say to remove the aura? That's a shame, but okay, I'll replace it with something less impressive. Although, it was a beautiful combination – aura + war cry. Besides, the high damage (10+2 when the enemy has 0 defense) will only apply in one cell away from the Banshee, as this is an aura effect.
Okay, I'll think about what to replace the aura with.

It would be great if the war cry only worked within a radius of 1. In my opinion, an enhanced war cry is a sufficient feature for the Banshee, providing uniqueness, and therefore no other abilities are needed. Abilities are like equipment; you can dress a unit in a dead, colorful parrot, or you can dress it in a combat unit with good stats and a minimal set of necessary abilities, which, nevertheless, is enough to distinguish it from other units.