After a few more minutes of playing with his new toy-... I mean, testing his new skill in a very serious and robust manner, Seth retrieved the arrow and removed his connection from it. After all, the arrow wasn't his and it's not as if he was starving for weapons to use.
He could always 'borrow' another one of Corvus' feathers and simply fly that about as his go to weapon until he found something of his very own. But when he returned the arrow to the slimy archer, while gleefully telling her in hushed tones all about his new discovery, she proposed an unexpected counter offer.
"Give me your arm."
"Alright. Just be careful though, it's the only one I've got left and I want it back when you're done with it."