Gedna's Refill is a unique Restoration ability in The Elder Scrolls III: Tribunal that restores caster's magicka, health and Fatigue over time.
All effects are constant on self:
This ability is used by Gedna Relvel, a powerful lich whose tomb is in the Old Mournhold, Temple Sewers.
Although this ability not intended for use by the Nerevarine, it can be acquired on the PC by using the console command:
Player -> AddSpell relvel_regenerate