Things You'll Need
Instructions
Obtain the Azura's Star Soul Gem
Obtain a portion of Glow Dust. The Azura's Star quest can only be activated if you have a Glow Dust item in your inventory. Glow Dust appears in many random locations in Oblivion, but the most guaranteed way of getting Glow Dust is by defeating a Will-o-the-Wisp enemy, which always carries some. These enemies appear in swampy areas, like the wilderness north of the town of Leyawiin, but only appear if your character is at least level 10.
Journey to Azura's shrine in the wilderness northwest of the town of Cheydinhal.
Activate the statue of the goddess Azura. You can only do so when the sun is at dawn or dusk, which is approximately 5 a.m. to 7 a.m. and 5 p.m. to 7 p.m. in the game. You need to be at least level two and carry Glow Dust in your inventory. Accept the quest from Azura's statue.
Travel to the Gutted Mine to kill five vampires. The quest will mark the mine's location on your map, so you won't have to search for it.
Kill the five vampires inside the Gutted Mine.
Journey back to Azura's Shrine and turn in the quest. Activate the statue to finish the quest and earn your Azura's Star. The Azura's Star is a reusable soul gem, unlike other soul gems that can only be used once, that can hold a soul charge of any level.
Soul Trap a Powerful Creature
Learn the Soul Trap spell. The Soul Trap spell is availalbe from a spell merchant at the Mage's Guild in any town. All spell merchants sell Soul Trap at the same price, so it doesn't matter which town you get it in.
Locate a Lich, Minotaur Lord, or Xivilai monster. These are the only three monsters in the game that possess a 1,600 charge soul. They only have a chance of appearing if your character is at least level 18, and even then their appearances are entirely random. The higher your level, the greater the chance they have to appear. Lichs typically appear inside dungeons and tombs. Minotaur Lords tend to roam the outside wilderness, usually patrolling roads. Xivilai demons live inside the Oblivion realms.
Cast the Soul Trap spell once you've encountered one of the monsters listed above. Your soul gem (in this case, Azura's Star) must be empty, and Soul Trap must be active when the monster dies. Try to cast the Soul Trap spell when your enemy is near death.
Kill the monster to obtain its soul. Lichs, Minotaur Lords, and Xivilai demons are three of the toughest monsters in the game. They have plenty of health, so it may take awhile to finally defeat one. Once your foe is killed with Soul Trap activate, your Azura's Star will instantly gain its soul.