Hear me out, I will get to the units--but you will probably figure it out as I explain my reasoning. We have spells for healing, rage, lightning, and jump...
We have a fairy that heals in a small area of effect(AOE). So, why not also have fairies that give out a small rage effect and a third fairy that would actually be an attacking fairy that spawns a small rain cloud or something that emits lightning. None of these spells would have a stacking effect. Thus, if the fairy for the aoe rage had a, lets say, +100% effect, two of the rage fairies would not give the same receiving unit a +200%
