I couldn't find the art or put the image together to a satisfactory quality, so here.

Name: Nightshade Silphium
Mark: The shape of a Solanaceae blossom, with a couple sparkles thrown in for good measure.
Orientation: Dark
Guild Leader: Al-Gin Garama Daroon
Guild Doctor: Tidius Reinor
Guild Enforcer: Regan Hiryuu
Guilder Motto: "The best spices are the rarest."
Member count: 63