The faun is a half human - half goat (from the head to the waist being the human half, but with the addition of goat's horns).
Goat legs to fit onto the bottom of a minifig torso, a hairpiece with goat horns and pointy ears and possibly a torso decal with a human chest but with some fur on, or a fur neck piece to come down over the torso. Maybe the flute thing aswell if BF decide to do some medievil instruments like a lute etc.
An idea to go along with the centaurs, also continuing the fantasy theme some fairie wings might be an idea and all the others, angel wings and demon wings ofcourse.
