Banishment by the power of the two sisters was supposed to be an agonizing experience. No ordinary mortal mind should have lingered on as the years passed. Anypony should have succumbed to the extraphysical nature of the kind of prison Sombra found himself in and found themselves reduced to pure instinct. Sombra was no ordinary mortal, and he had all time he would need to plan revenge. Only eternity awaits him. Original version: https://www.fimfiction.net/story/338027/click