I am not a Seelie, but I've done more than a few favors for them over the years. [He has that familiar light inside him now, halfway through his own glass, legs now stretched out on the coffee table.] Payment for services rendered. I am a warlock. So, magical services rendered.

[This time when he blinks, his eyes are golden cat's eyes. It feels safer to reveal his warlock mark here, without any Shadowhunters bent on hunting down warlocks to take trophies from them.] The Seelie have many names. You may well have met one of the Fair Folk without knowing it.