C338 Invincible Flood Dragon.

"What a pure power of thunder. Her Thunder Spirit Root is probably close to the upper grade." Garrett muttered.

At this time, Isobel's ball of lightning had already completely formed and shot towards the huge demon shadow.

This strike obviously exhausted Isobel's superpower. Her breasts were violently heaving, and her forehead was already covered in sweat. She was panting heavily