It bestows two greater powers:
- The Master's Hand – Fortify Armorer 20 pts for 120 secs on Self
- Warden Key – Open Hard Lock in 15 ft on Target
Note that the Warden Key greater power granted by the doomstone acts as a more powerful "open lock" spell than the spell you receive if you choose the Tower as your original birthsign. When using the spell, remember to aim extremely carefully at the lock, or door which you wish to open. It is easy to miss when casting at the target, and if you do miss your only option will be to try to pick the lock, use another spell, or if you do not have access to either possibilities, wait 24 hours for it to recharge. This can be very inconvenient.