Agreed. Nerf time!
Statements indicating he was amped from the novelization:
The Emperor gasped. Stared at his hands, which had begun knitting themselves back together, bones regrowing, pale flesh closing over them. "The life-force of your bond," he said, his voice tinged with wonder. "A dyad in the Force!"
His gleeful triumphant thoughts washed over Rey, as she struggled against his grip, unable to move. He had won. At last. All those years, all that searching. He'd tried to create a dyad with Anakin, as his master had tried to create one with him. The Rule of Two, a Master always in desperate search of a yet more powerful apprentice, was a pale imitation, an unworthy but necessary successor to the older, purer doctrine of the Dyad.
"Unseen for generations," he crowed. "And now the power of two restores the one true Emperor!"
He raised his perfect, healed hands, and called on all the dark power of the Force and the Sith who had come before him, and pulled their life from their very bodies. It poured from them like a river of light, leaving them weaker and weaker.
The Emperor laughed as his body strengthened, became whole. The milky film faded from his eyes, revealing golden irises around obsidian pupils.
...
Rey and Ben lay collapsed on the floor as Emperor Palpatine released himself from the Ommin harness and drifted down. He stood straight and strong now. Invincible.
The Emperor raised his voice to the throng. "Look what you have made," he said. Their chanted response was thunderous, and he stood, hands slightly raised, as if absorbing their worship as power.
...
"Do not fear their feeble attack, my faithful!" the Emperor said, Ben already forgotten. His lips spread apart into a nightmarish grin, and he lifted his face to Exegol's sky. "Nothing will stop the return of the Sith!"
He raised his hands as though reaching toward the battle overhead. Even through her haze of weakness and exhaustion, Rey could sense him draw on the Force. The Emperor's power was staggering now. No, their power. Hers and Ben's.
Tears streamed down her face as he used their stolen power to create a conduit of Force lightning. Writhing, crooked tendrils of light shot from his fingers, coalesced into a thick stream of light that burst into the sky, flooding the Resistance ships. They sparked helplessly against the onslaught, tilting on their axis.
...
The Emperor's power was beautiful to behold, reaching ever higher, spreading out like a flower of light. In a way, she and Ben had made that. But the Emperor was using it for unspeakable evil. And now she was helpless. Dying.
...
His attack intensified. "You are nothing!" he yelled. "A scavenger girl is no match for the power in me. I am all the Sith!"
So Disney Palpy was amped by:
- 1- The Force Dyad, which is the potential Power both Ben and Rey can create, and Palpatine craved by attempting to creating a Force Dyad with Anakin (Thank you Disney for making the Rule of Two no longer cool)
- 2- The creepy chanting of the Sith cultists
- 3- The power of all the Sith before him (It was literal and not metaphorical, therefore similar to Rey being powered by all the Jedi before her)
