Promise scopes out the room, and writes, Hello. Call me Promise. Can you tell me about your magic?
"I can't tell you much more without specific questions. I'd describe how it feels, but you lack the proper context to understand."
Do you anticipate any interactions with my name being magically mine to begin with, unlike a mortal's? Do you offer any assurances that you won't use knowing my new name against me?
"As to unexpected interactions, I cannot rule them out, but I sincerely doubt they will harm you. I have interacted with another system of magic involving names before, a race of people who could swear promises upon their name and be literally unable to not follow through. I could change their names and release them from promises, and those they swore to only realized it when they began to act in ways the promises forbade. They could still swear promises under their new name, and as far as I could tell none of them suffered in unexpected ways."
Can my new name possibly be unpronounceable or include parts that are?
Could it have parts that are not, strictly, pronounced, but require elaborate movements or sorcery? The effect I'm after is for someone commanding me to speak my name either getting nothing or in so doing offering me more freedom than they expect.
Okay. Will the general principle hold if I give the object and the dog names which do not take twenty minutes to 'pronounce' or should I come up with long ones for them if I want one for me?
"Extremely long purely spoken names act normally. My truename would take forty-five minutes to say. But to be safe I would suggest trying at least one long-form name before your renaming ritual. Do keep in mind that the name you choose will change you. I can direct the change to some extent, but what it means to you will also affect the result."
I'll try to pick something suitable, but can you go into more detail on how and how strongly people as opposed to fruit trees are affected by their names?
I am perfectly happy with my physical form. How can I best avoid perturbing it, and if it does wind up perturbed can I put it back with sorcery without adverse effect?
"You must change something or the new name will not take. I can direct the change towards your habits and preferences instead, but this is not certain to work. I do not know what sorcery is capable of, but if your form changes it will be your natural form. Any magic to change it back must be permanent."
Sorcery can do permanent. I'd rather have to cut my hair and turn my wings green again or something than adjust to new habits and preferences. I have a tree which is magically connected to me. Is there a risk that it will no longer be mine in the right way when I am renamed?
To the extent that a fairy kind is like a species, yes. I have a tree because of my kind.
All right. What advice do you have on name structure? Can I include variant "pronunciations" so that I may render different valid forms of it including, say, either explosions or dramatic temperature changes, as I please?
Other than that, it's time for another long list of examples.
And then go study up on de-aging mortals.
Nick tries to learn sorcery. He gets very good with fairy lights and fire in under a week, and then asks for suggestions and advice once in a while. Always with a tentative "If you don't mind."
Promise (who still hasn't fixed her ears except while alone inside her tree, and still finds it weird to speak aloud while deaf and unable to moderate her volume) suggests learning to help plants along, or purify water, or make candied dewdrops.