Also, your skill in Alchemy directly influences magnitude and duration of your potions. Master Alchemist is able to create potion from a single ingredient, which means that whatever effect the ingredient has listed as first, you can make potion with that effect. At Novice, you are able to identify only one effect on any ingredient, with leveling to Expert unlocks all four effects you can work with. Skill - Alchemy in Oblivion is really dependant on your skill. So I decided to make this simple guide for people to understand the basics about Alchemy. So I decided to change that and was surprised how different, powerful and fun Alchemy can be in Oblivion. I have never fully delved into Oblivion Alchemy and I guess that I wasn´t the only one.