Rot has just killed the All Beast, and now focuses on Finn and Felix.
Rot: Now... It's your turn to die. (Rot threatens as his undead hands break out of the ground and ensnare Finn and Felix once again)
Felix Cross: Damn it! Not this again! (Felix yells after being trapped by the hands)
Finn Rainer: What did humanity ever do to you Great Demons, to make you hate us so much?! (Finn yells)
Rot: Don't misunderstand my intentions, I do not hate humanity. But those who hate your kind, have good reasons for it. (Rot explains calmly)
Felix Cross: If you don't hate us, then let us go! (Felix yells)
Rot: No that's not possible... If I did that, you would continue with your miserable lives. (Rot easy with a weak smile)
Felix Cross: Well then. Lightning...
Rot: Try it, and your deaths shall be excruciating. (Rot says ominously, as he quickly covers the mouth of Felix with his real hand)
Note: Mages don't need to say their spells to cast them, but choose to nonetheless.