The experience wasn't a comfortable one, it felt like his insides were being frozen, melted and healed, and the cycle repeated itself.
The energy felt extremely hot, but at the same time somewhat cold. Hubris was in a pickle out there, one minute his master would sweat like a pig, the next he was shivering like his life depended on it.
He didn't know whether to start a fire or fan him for cold air. The changes happened at speeds he couldn't keep up with, so he sat there and hoped for the best.
He wouldn't be much of an ancient beast if he couldn't see the energy running rampant inside of his Lord. But he surmised that, since magic didn't exist in this world, his master decided to tame this energy to replace magic.
But he knew, deep within his heart, even if the energy was attempting to kill him, there was nothing much he would be able to do. That brought back the feelings of hopelessness that he hated more than anything.