TES Oblivion!!!!!!!!!!!!!!!!!!?

To achieve 100% Chameleon:

* Enchant 5 pieces of armor or jewelry with Grand level souls, each with 20% Chameleon. To do this you must have:

o Access to the Arcane University's Enchanting Altars (or the Frostcrag Spire official mod).

o At least 50 Illusion skill to be capable of casting a Chameleon spell you own, or the Fingernail Moon greater power, obtainable by activating the Shadow Stone.

o 5 soul gems with Grand level souls (or the equivalent using black soul gems or Azura's Star)

o 5 items that you want to enchant. You may want to enchant lightweight (or zero weight) clothing since most enemies will no longer detect you to attack, thus armor rating is no longer important.

* Some items found in-game that can be used in place of one custom enchanted item are: the Ring of Khajiiti from Meridia's quest (35% Chameleon); or, one of several items found in random loot that can provide up to 30% Chameleon.

* Alternatively, Sigil Stones can be used to enchant items without requiring access to the enchanting altar. 5 latent Sigil Stones (20% each) provide the same effect as grand soul gems. With ascendent stones (25%) or transcendent stones (30%) only 4 are necessary.

* Custom chameleon potions can be created, up to a maximum strength of 44% for 143 seconds. Depending upon your alchemy skill you can use potions alone or combine potions with a few enchanted items to obtain 100% Chameleon.

* It is possible to create a 15 second 100% Chameleon spell once you reach Expert level (75) in Illusion; at Master level you can make even longer duration spells, limited only by the magicka cost (at Master level, a 60 second spell costs 274 magicka).

* Combinations of the above. For instance, the Ring of Khajiiti and two items enchanted with transcendent sigil stones gives 95% Chameleon from just three inventory slots. A custom spell can then supply the remaining 5% with a 120 second duration for only 41 magicka.

* A long duration 100% Chameleon spell is cast by Volanaro during the Bruma Recommendation Mages Guild quest. It is possible to get the spell cast on your character, as detailed in the quest notes.

More info at the link below.

From random drops on Goblins ect. Or you can buy it from one of the magic shops.