Oghma Infinium (Oblivion)

Oghma Infinium is a powerful skill book which is the reward for completing Hermaeus Mora's quest, He will only give it to the one who has completed all the other Daedric quests in Cyrodiil. One must then capture a soul from each of the ten races of Cyrodiil with a special spell and gem and bring it to here. The one who does this is then given the artifact which will raise some of his abilities.

Oblivion
The Oghma Infinium is the reward item from the task received at the Shrine of Hermaeus Mora. It's a skillbook that adds +10 points to three skills, and +10 to two attributes. Use it and you will be asked to read:


 * Path of Steel: Blade +10, Blunt +10, Heavy Armor +10, Speed +10, Strength +10
 * Path of Shadow: Sneak +10, Security +10, Light Armor +10, Agility +10, Speed +10
 * Path of Spirit: Destruction +10, Conjuration +10, Restoration +10, Intelligence +10, Willpower +10

Skyrim
The Oghma Infinium is obtained through the quest Discerning the Transmudane given by Septimus Signus, who is found north of the College of Winterhold, in the ice fields. No other prerequisite is needed to obtain the book other than completing the quest. On obtaining the artifact, you gain 5 points in the path of your choosing:
 * Path of M2011-11-14_00002.jpg: Heavy Armor +5, One-handed Weapons +5, Smithing +5, Two-handed Weapons +5, Archery +5, Block +5
 * Path of Shadow: Light Armor +5, Pickpocket +5, Speech +5, Sneak +5, Lockpicking +5
 * Path of Magic: Destruction +5, Restoration +5, Conjuration +5, Illusion +5, Alteration +5, Enchating +5

After choosing your path, the book disappears from your inventory.