The Eye of Rassilon
This ancient Gallifreyan artifact appears to be a fine faceted citrine, about an inch and a half across, and has a faint indeterminate magical aura. If an adventurer attempts to look through it, s/he may (10%) see a brief image of the past or the future, or from an alternate past, present, or future -- and at the same time will receive a Suggestion to place the gem into his/her own eye socket to allow better divination.
If the Eye is placed into an empty eye socket, it will instantly graft itself to the skull and cannot be removed without the death of its owner. The Eye grants the following special abilities:
- Sense nearby disturbances in the wibbly-wobbly timey-wimey continuum
- Tongues (as the 4th-level Cleric spell, not the 2nd-level Courtesan)
- Regeneration (Gallifreyan)
- ...