Mercer stared coldly at the chunks of flesh scattered on the ground, stepped forward to take the Arc Reactor from Whiplash, and tossed it to Stark.
"Keep it. I took care of a major problem for you. I'm off to grab some food."
Suddenly, a voice accompanied by a soft chuckle sounded in Mercer's ear.
"Mr. Mercer, welcome to this universe. If you don't mind, please come to my humble abode for a chat."
The voice caught Mercer off guard, but he soon gave an almost imperceptible nod to acknowledge it.
"Stark, I'll leave the cleanup to you. Contact me once you're done."
After speaking to Stark, a streak of yellow light shot from the center of Mercer's forehead into Stark's mind, leaving him a way to get in touch.
He had established a communication channel with Stark, which was much better than any phone call.
As his words faded, Mercer's body gradually turned insubstantial.
He had finished Whiplash in the most astonishing way, then departed in an equally shocking fashion.
Quite a few people had clearly recorded Mercer's arrival and disappearance. He was about to go viral again.
Watching Mercer leave, Stark didn't even get a chance to speak. He simply stood there, quietly taking in the strange sensation in his mind.
After leaving, Mercer arrived at the Sanctum Sanctorum in New York. He had barely stopped at the entrance, and hadn't even raised his hand, when the door opened on its own.
A woman in yellow stood in the middle of the hall, smiling at him.
"So you're Mr. Mercer. I've heard much about you."
"How do you know me?" Mercer asked.
The Ancient One smiled faintly. "I'm in contact with the Sorcerers Supreme of other worlds. I've also spoken with the Ancient One from your universe. In