I came up with this concept based on the shoulders and PvP gear -- it was really exciting to find daggers that fit it so perfectly.
Item List: Head: Cruel Gladiator's Leather Helm (Horde only, rogue only) Shoulders: Felflame Inferno Shoulderpads (Mythic) Back: Hidden Chest: Sin'dorei Tunic (Blood elf only) Wrist: Hidden Hands: Cruel Gladiator's Leather Gloves (Horde only, rogue only) Waist: Sin'dorei Belt (Blood elf only) Legs: Sin'dorei Leggings (Blood elf only) Feet: Cruel Gladiator's Leather Slippers (Horde only, rogue only) Weapons: Athame of the Sanguine Ritual (Heroic)