Four hours later, Ezra clears out his thirtieth building.
Storing the pill in his space ring with the label glued to it as usual, while burning the rest of the stool to dust, he exits.
He then waits a minute or two for the puppet to go and come out, thus leaving the door open, he then closes the door and leaves a right in front of it.
After running intensely for majority of the past four hours, Ezra's body was sore all over but his energy reserves were just a bit from full capacity, having just rested.
Continuously using would do that to a person.
In exchange, Ezra's proficiency with the skill was growing rapidly, as he used it, he became more aware of the many layers of concealment they were and could now tweak them to fit his wants easily, but he has to concentrate.
So now, he could easily tweak the skill to make him remain visible but have all other aspects of his presence erased.
Or have his presence revealed but remain invisible.