Prestige Masque of the Black Rose Katarina

Your mission is confirmed. Strike at the Silken Danse. The eighth night after the new moon, at the manor of House Kythera. Masquerade ball—dress in the attire of Noxian noblesse. Enclosed is an invitation and portrait of the mark. Method is yours to decide. Burn this message and hone your steel. (The letter is unsigned.)