Discussion about the INFERNO faction – Demons and Devils.

Hello! I have a question, please answer if anyone knows. The damage from Hellfire in the skill description is written as 10*(Spell Power+1). Does it multiply by the number of creatures? Some people say that the skill is effective for low-level creatures due to their large numbers, while others say that if you separate 1 creature, Hellfire deals the same damage as if all the creatures were in one stack. Thank you in advance (version 3.1).