"Gears of Change!"
She stabs the floor, and her turnkey-staff sinks ethereally into it. She turns it. Various glowy-brass pieces seep out of the area, a bit slowly. Springs, cogs, levers. Bits peel off of her costume, too, without diminishing it. They whiz around, attaching to each other and arranging themselves. She makes a little toy car over about thirty seconds. The floor is undamaged. The car zips around, under her control.
"The brass I'm making is not permanent, I think. It's probably faster on anything real, but I didn't want to mess with your stuff. And I had to pay attention, just, not as much as if I was putting it together by hand. I love it."