this needs a SERIOUS debuff on hp. this essentially overshadows scarab big time.
i recommend unupped 2 hp and upped 3hp.
so then all of them can still be killed by rain of fire, while it isnt UP at the same time.
besides mechanics, in concept it doesn't make sense. eagles don't hunt in a pack.
scarab is more like a plague, which is why scarab is more acceptable with swarm.
but eagles intend to be more solitary hunters and rather get pissed at another eagle for interfering with its hunt.
so overall, the concept is just wrong.
but mechanic wise, it needs lowering of hp.