Luka spun around and unleashed a discharge toward Iggy, hoping that Mimi's unintentional attack would put him in a bad position to dodge her attack. Unlike Thunder Bullet the ability Discharge was of her own creation that took advantage of her ability to spontaneous discharge lightning magic from her body, especially when riled up. It lacked the power and intensity of most lightning magic but it was very fast to cast, accurate and hard to dodge. She fired three such discharges in succession at his position and without waiting to see if any made contact leaped forward, her body engulfed in lightning. 

With her speed and mobility she intended to get behind Iggy while he defended, since she knew that the scale for brains would most likely repel the Discharge attacks. Luka would appear mid-air behind Iggy and attempt to lay her hands upon him. Now at this point it should be noted that Luka was no hand to hand combatant, not like Iggy or Mimi were. There was no way she could beat them that way. But she didn't have to. If she could put her and on Iggy's flesh then she could electrocute his ass. Though the same could be said for any part of her skin so he had better be careful about how he attempted to stop her.