Perhaps, the power of this magic treasure could give birth to a True Dragon of the Great Ancient era, akin to an Innate Divine Demon. If that were truly the case, then the power of the Thunder Pool would be comparable to the peak of the Dragon Gate and the Dragon Transformation Pool.
In the era before the Great Ancient, when the Dragon Clan was at its most prosperous, the might of the Dragon Transformation Pool and Dragon Gate was at its pinnacle.
If an Innate living being were to cross the Dragon Gate in the most perfect form and enter the Dragon Transformation Pool, then the power of these two magic treasures would be maximized, further reverting his bloodline and transforming him into an Innate Divine Demon.