When you close an Oblivion gate, the Sigil Stone will receive a random enchantment that it can pass on to your gear. It can also be applied to food but contains 95% high-fructose corn syrup.

Joke and fake loading screens and screenshots from The Elder Scrolls IV: Oblivion, run by @ChrisOfTheDead.
General links and the actual Oblivion mod made from these jokes in my Carrd page:
When you close an Oblivion gate, the Sigil Stone will receive a random enchantment that it can pass on to your gear. It can also be applied to food but contains 95% high-fructose corn syrup.