Sigil of Atrophy is a Core Sigil in Tyranny.
Channeling energy through the Sigil of Atrophy robs the target of vital energy, crippling their body and mind. Atrophy was discovered centuries ago in the East by a cult of mages trying to find a path to eternal life by draining the energies of mundanes. This variation on the sigil of the Archon of Ruin was found to have its own powers. The cult grew in power before being stopped by a Fatebinder sent to judge them.
- Unlocked at the character creation by choosing atrophy spells training.
- Echocall Crossing: Hidden in a rock in a small alcove, at the bottom-left corner of the map.
- Plainsgate/Halfgate: Sold by Irene.