don't recall if it was mentioned yet or not, but the grey portrait prevents all aging and death so long as it is undestroyed.
[spoiler]Gray Portrait: Initially only a blank canvas, a gray portrait becomes a picture of the owner after one week. After this time, it magically absorbs all the negative effects of aging and prevents the owner from dying of old age. If the portrait is destroyed, the owner immediately suffers all the negative effects of age and instantly dies if he has outlived his natural lifespan. If the owner is killed by any means, the canvas becomes blank again.
Aura: Strong necromancy [Evil]; Caster Level: 20th; Prerequisites: Craft Wondrous Item, temporal stasis; Weight: 10 lbs.[/spoiler]