Akechi watches Donatello intently, chin in hand. It's not quite the same as his earlier display, but similar enough. Clearly some form of power, be it telepathy or magic, which aligns with Leonardo's portals before.

"Impressive work." Though it does raise a few question. "Did you actively change the structure of the broom, or is it merely augmented in some fashion? I have to admit, your skills are a fair degree different from the more offensive abilities I'm accustomed to."

Perhaps not outlandish for the cognitive world, at least, given that even prop weapons hold power there.