The anima powers you get inside Torghast in World of Warcraft: Shadowlands are designed to give you the buffs you need to make it through entire layers of the tower, including those in the Twisting Corridors. You don’t get to choose from very many, so what do you do if you’re not thrilled with the selections offered to you?
Fortunately, the solution is a simple one. If you want to reroll for anima powers, all you need to do is leave. Exit the Twisting Corridors, and come right back inside. The game will present you with a fresh selection of anima powers for you to take with you inside the Twisting Corridors.
You can take advantage of this method to start out your run with the best possible anima power, rolling until you come up with an Epic power. You could potentially keep leaving and re-entering the Twisting Corridors for Epic powers while reducing the amount of necessary rolls after getting the Ritual Promise of Fortune. You can purchase this from Ve’nari, one of the brokers inside the Maw, the next time you’re in the area.
Epic anima powers exist for each class, as well as the four covenants in Shadowlands. Your powers will continue to stack as you get deeper into the layers of the Twisting Corridors.