Torghast Wing Rotation
Torghast's Wings are Skoldus Hall, Fracture Chambers, Soulforges, Coldheart Interstitia, Mort'regar, and The Upper Reaches. Only two of the six Wings will be active at a time; these rotate every week.
Each Wing offers different environments, enemies, and bosses and is divided into eight Layers. Each Layer is divided into six Floors. Layer 1 contains Floors 1 through 6, Layer 2 contains Floors 7 through 12 and so on. Completing a Layer will end your run in that Wing and reward you with  Soul Ash, a currency that you will need in order to create your Legendary gear.
Your character's item level should be 180+.
If needed, you can purchase WOW Gold & BOE Gears & BOE Class Package to upgade your ilvl!