Darkists's Style - Mana Backlfow is a skill that was used by Darkist and currently used by Dark.
The skill was not seen by itself but presumably it reverses the mana flow of the target.
Dark used this skill in combination with Bear Hunt to create Nightmare Heart Detonation.
Notes & Trivia
- It is assumed that it is Darkist's skill because it has his name on it. Dark can most likely use the skill by itself.