Yellow does that.

"...I had to feed a mortal once," Promise says, "she was here too long and would have starved..."

"Is she still here?"

"She's probably dead by now."

She gestures at the back of Yellow's head. "You want to release her from all the orders she is under."

"I rescind all your orders!" agrees Yellow.

"...what did you do to him," asks Promise.

"It is called a mind trick. He is unusually susceptible."

"What is a - mind trick -" She goes into a room wallpapered with pretty drawings of plants, starts stuffing fruit from a bowl into a bag.

"It is the name of the technique by which a weak-minded person's perception of the world is supplanted by one's own."

Shiver.

"He tried to vassalize me first. I considered that sufficient provocation. Do you know of a way by which I can return to the world I came from?"

"Yeah."

"What is it?"

"A sorcery gate can send you back to the mortal world."

"Where can I find one?"

"I don't know where there are any being monitored by someone who can open them. I... can make you one..."

"What payment would you ask for this task?"

"If you don't like my answer are you going to mind trick me?"

"Not unless you are going to try to vassalize me."

"I'm not. Do you have any other weird - tricks - besides the mind trick?"

"Yes. Telekinetics, energy manipulation, various physical and mental enhancements or impairments."

"Okay. I want you to - bodyguard me while I go visit my tree and collect a branch from it, in case my old master or one of his vassals is there. Then I'll make you a gate. It may take up to a week to settle and I don't know how fast you travel so it will take a while to get to the tree."

"How far is your tree?"

"It'll take me most of a day to fly there at my top sustainable speed."

"Which is how fast?"

"About fifty miles an hour with faster bursts through anywhere that seems dangerous."