Ring of Aging (3.5e Equipment)
From D&D Wiki
This is a magic ring. Causes the user to age at ten times the normal rate, starting from after the ring is worn for 30 minutes continuously. Also, starting from after the ring is worn for 60 minutes continuously, it will cause the user to have +1 to all ability scores while the ring is still being worn. Starting at 120 minutes, this bonus increases to +2, and at 240 minutes it increases to +4 and also speeds up the user's aging to 100 times the normal rate instead of 10 times the normal rate. At 480 minutes the aging will be 1000 times the normal rate.
This ring has no magical effect on creatures which are immune to aging. For creatures temporarily immune to aging, the time worn continuously will still be counted, however all other magic effects of this ring will be suppressed until you are no longer immune to aging. (Note: For elans, who have normal aging effects but no maximum age, the ring will function normally until venerable age is reached, at which point the ring's functions will stop working for that person.)