Aizen was equally curious about Tony's strength.
With three Seeds of Infinity Stones, the Time Stone, and the inheritance of the Sorcerer Supreme from his parallel-world self, the strongest mage—if the World Consciousness of Tony's world had not prevented him from selling or fusing the Infinity Stones, he might have already stepped into the domain of Rules.
Even if he had not yet entered it, he had likely reached the threshold of that domain, much like Aizen had before, or at least come close.
Now that Aizen had entered the domain of Rules, there was bound to be a vast gap in strength between them. Still, he wanted to see just how strong Tony had become.
Great King of Asgard: "No, let this battle be handled by me."
Great King of Asgard: "@Captain of the 5th Division, Shendu has already fallen to my hand. Only you remain."
Great King of Asgard: "Today, I shall forge my position as the strongest beneath Bai Xuan in the Chat Group!"
No one knew when Loki's battle with Shendu had ended. Once it was over, Loki had just been about to mock Shendu in the Chat Group when he saw Tony challenge Aizen.
After confirming that Aizen had entered the domain of Rules, he immediately tagged him without another word.
What was there to fight Tony Stark for?
So what if he was the Sorcerer Supreme? So what if he had Runic Armor? Without entering the domain of Rules, he possessed nothing worthy of their attention and could not bring them even the slightest enjoyment from battle.
The gap between those within the domain of Rules and those outside it was simply that absolute.
He had already defeated Shendu. If he defeated Aizen as well, then he would indisputably become the strongest beneath Bai