My thoughts on swarms: While I know in the MM it says that swarms are immune to singular combat spells, I am house ruling here some. It doesn't make any sense to me that the orb wouldn't be able to effect a mass of the swarm. I am taking away the +50% bonus to damage though to balance the effect out.
I hope my bending of these rules do not offend anyone too greatly.
I hope my bending of these rules do not offend anyone too greatly.