Ouroboros and Nightmare Beast Senbula both ascended to Pseudo-Dragons, helping Russell to directly upgrade to a Fourth-layer High Dragon Domain Lord, and including his Flying Dragon Knight status, he became a solid Fifth-layer High Pseudo-Dragon Knight with maxed-out levels.
Of course, Russell's combat capability did not increase by much.
After all, no matter how many layers a Dragon Domain Lord unlocked in the Way of the Knight system, it was merely the power of the Dragon Breath Tier. What truly determined Russell's strength was his status as a Phantom Dragon Knight, as only the Dragon Flame Tier could manipulate the elemental forces.
But this didn't mean that Russell's power had not progressed.
After all, even a Pseudo-Dragon could manipulate a trace of elemental force.
Moreover, with the Earth Attribute elemental power brought by Ouroboros, Russell believed he could soon comprehend the Secret Technique: Sword of Earth.