Time for Firestorm to get their message from the Entity.
“Ronald Raymond of Earth, you need to study.”
“Jason Rusch of Earth, you need to get your head out of the books.”
“Learn from each other so you can stop him.”
“Don’t let him destroy me.”
There’s a clear shot of Black Lantern Firestorm holding a black battery, and given what Professor Stein has to say, well, things are bad. He says that there is a third and final stage of Firestorm inside the matrix. The voice starts again, and they realize that the third version is evil, especially when he says he wants to break free and destroy the White Battery.