(If you want to say it was the envoy who summoned you and not you who sought them we can change the fluff around a little but this is what's coming out of my fingers at 5 am)

How it was you learned of that old stone arch in the furthest part of the forest is your business alone, but there you arrived in the midst of the night, on the even of the full moon. And beyond that arch, a celebration. Goat-like men and women made of trees dancing in the intense silver beams of the moon, which burned as bright as day. Music, wine, and feasting abound, but you were not here for that. You found yourself before what appeared to be a man, in the form of a tall and elegant, pointy-eared Hjuran with long hair, and glowing tattoos.

"Welcome, mortal! You stand before Caladine, envoy of the Maiden of the Moon. For what reason seek you the Gloaming Fey? Or did, mayhap, you wander here by chance? Ah, but no. I know that expression well." he said with an amused grin, and he let you tell your story and desire.

"Hahaha, a deal to restore your youth, is it? An understandable plight, you beings are so short-lived, gone in the blink of an eye. A life felt not fully lived, a mind that seeks adventure but a body too frail to pursue. Yes, yessss, I see.... But tell me, what have you to offer our lady? I see barest threads of your life in fate's loom, but you were not a very powerful mortal, were you? A guard, robust for the common man, perhaps, but... hm, no. No, it won't do. You must needs be something better if you are to serve the Maiden's interests. You shall have your youth, mortal, but not only so. Do you have the inclination to make a warlock's pact? Ah, but perhaps something different is suitable for one of your experience... Yes, perhaps.... more like a Paladin's rites. Have you the will to become a champion of the Maiden of the Moon?"

"Ah, of course you would know to what you agree beforehand." his lips curl up into a grin, and he claps his hands. "Very well! Then let's have something like a knight's charter. For these boons I would have you swear so:"

"You shall pledge yourself to the service of the Maiden of the Moon. You are free to engage in whatever pursuits you wish, provided they do not run counter to the Maiden's interests, but you are expected to undertake tasks should they be given to you through her or her envoys, in person or in dream. You needn't follow the directives of her brother, the Prince of Hearts, or the Witch of Fates, but as they are part of the Gloaming Fey, I would at least give them consideration - and whatever you do, do not dare insult them."

"Sehanine is the Maiden's mother, and her followers are the Maiden's allies. Thusly, they are also your allies. Do not harm a member of Sehanine's faithful, and come to their aid if it's feasible. You needn't let yourself be played the fool in church politics, so use your best judgement."

"The Maiden is a hunter. Respect your kills and use all of what you are able, if it is not a man. Eliminate werewolves wherever you find them, whether you end their lives or cure their afflictions. There is an exception, but you will be forewarned in the event you draw close."

"Ah, and I should mention. Do not feign prayer toward the Maiden. Though she was born from divine womb, she herself lacks the godly spark." Caladine concludes, and then studies your reaction. "Think you this agreement is quite lenient for the boon you are asking? The Maiden, by her nature, allows quite some degree of autonomy among her servants. But when she has need of you she expects great results. You might be asked to duel in her name, to steal, to kill, or to protect someone. And when those times come, it would behoove you not to disappoint her. Now.... any questions, or shall we begin the rite?" A somewhat terrifying grin crosses his face.