It's called a Ghostlight Strapon. [pc.hasMagicock] is the parser to call if the Champ has one. I have tried to go through some scenes with my female character using one, unfortunately I can't always tell whether a scene is written to account for it or not (though Knife-Wielding Crab goes out of his way to call it into play), as opposed to some scenes where you just get the adjectives for the cock, like blue, magic, spectral, etc. He does a parser check and describes touching or triggering it and if coming into view, really thoughtful.
If a scene calls for the Champ to have a cock, a magicock (worn and active) will be able to trigger that scene. I believe its length is 5 inches for size purposes and roughly human type (not tapered or flared). It doesn't have balls, so don't put any calls for [pc.balls] without checking with a [pc.hasBalls] parser first. Use [pc.hasRealCock] if you need to do something where the Champ needs a real cock.
It's a magic clit ring, it forms an ectoplasmic or ghostlight or spectral shaft.
It can ejaculate, it can bead pre (ghostly goo, enchanted jizz, ectoplasmic spunk, etc.). It can't impregnate. It has a musk to it (though what that is is debateable); could be electric wildberry, or ozone and blueberry. Could be tangy strawberry fruit roll-up.
"A 'ghostlight strapon' is a clit piercing with a flair," Evergreen explains, producing a small silver ring from between her breasts. It seems unremarkable at a glance. "You wear it like any other, but when intense arousal strikes, a magically-crafted spectral phallus will spring to life between your legs. It's reactive, always ready, and never runs dry... though I'm afraid that it won't be impregnating anyone. Still, a fun diversion. It even has a hint of musk to it, to really drive a girl crazy when she sucks you off."
– it feels like your clit's just grown ten times its size if not more, swaying in the air and throbbing with desperate need.
You blink your eyes open, staring down at yourself. A ghostly-blue cock, semi-transparent and half-hard, sways from your clit. You reach an experimental hand down, brushing your fingertips over it, and nearly scream from the magical feedback. Gods, what a rush! It feels amazing, every bit as sensitive as your bud. The shaft of it twitches, and a swirling white liquid drips from your newly formed crown — just a drop, but it's enough to make you weak in the knees.
I can't post full pages, nor would I. These are just the basic sale-pitch and some 'sensation' descriptions. I would recommend that you get to Evergreen and do the scene (and the test-drive) so you can get it fresh in your mind what it looks and feels like and how it works.