In The Elder Scrolls IV: Oblivion, the Fortify Skill spell effect is not available as a default purchasable spell but can be obtained through several specific methods:
- Apprentice Stone Power : The Apprentice Birthsign (stone) near Skingrad grants the "Void Seed" power, which includes Fortify Skill effects for certain magic skills like Illusion and Alchemy. Acquiring this power allows you to create custom Fortify Skill spells at the Altar of Spellmaking
- Daedric and Quest Rewards : Completing certain quests such as the Origin of the Gray Prince or the Dark Brotherhood's "Whodunit?" quest grants abilities or powers that include Fortify Skill effects. Also, completing Nocturnal's Daedric quest and obtaining the Skeleton Key provides a constant Fortify Skill effect while the key is in your inventory
- Vampirism : Becoming a vampire grants access to Fortify Skill and Fortify Attribute effects
- Spell Vendors and Spellmaking : While no default Fortify Skill spells are sold by standard vendors, some official plug-ins like the Thieves Den and Spell Tomes add spells with Fortify Skill effects. Additionally, once you have access to the Fortify Skill effect (e.g., via the Apprentice Stone), you can create custom spells that fortify specific skills
- Items : Certain items like the Skeleton Key have Fortify Skill enchantments
To summarize, the most straightforward way to get a Fortify Skill spell for spellmaking or enchanting is to:
- Travel to the Apprentice Stone southwest of Skingrad and activate it to gain the Void Seed power.
- Use this power to enable Fortify Skill effects in your spellmaking at the Altar of Spellmaking (located in the Arcane University or Frostcrag Spire).
- Optionally, acquire related quest rewards or become a vampire for additional Fortify Skill effects.
This approach allows you to create custom Fortify Skill spells for various skills such as Acrobatics, Blade, Security, Athletics, and more
