Draugr are undead creatures that can be found in various locations in the game Elder Scrolls V: Skyrim. These creatures have different levels of power, ranging from the lowly Restless Draugr to the formidable Deathlord. Each level of Draugr fills a specific type of soul gem when defeated.
The lowest level of Draugr, the Restless Draugr, fills Lesser Soul Gems upon defeat. These soul gems are of lower quality and can hold smaller souls. While they may not be as valuable as higher-level soul gems, they are still useful for enchanting weapons and armor.
Moving up in power, the next level of Draugr is the Draugr Overlord. When defeated, Draugr Overlords fill Greater Soul Gems. These soul gems are of higher quality and can hold larger souls. They are more valuable and sought after by enchanters and mages.
The most powerful level of Draugr is the Draugr Deathlord. These formidable enemies fill Grand Soul Gems upon defeat. Grand Soul Gems are the highest quality soul gems and can hold the largest souls. They are extremely valuable and are often used for enchanting the most powerful weapons and armor.
It is important to note that the soul level of a Draugr corresponds to the soul gem it fills. The higher the level of the Draugr, the higher the level of soul gem it will fill. This means that defeating a Draugr Deathlord will yield a Grand Soul Gem, while defeating a Restless Draugr will only yield a Lesser Soul Gem.
In my personal experience playing Skyrim, I have encountered numerous Draugr in various dungeons and Nordic ruins. It is always exciting to defeat a Draugr Deathlord and collect the Grand Soul Gem it fills. These gems can be quite valuable and useful for enchanting powerful weapons and armor.
To summarize, Draugr fill different types of soul gems depending on their level. Restless Draugr fill Lesser Soul Gems, Draugr Overlords fill Greater Soul Gems, and Draugr Deathlords fill Grand Soul Gems. The higher the level of the Draugr, the higher the level of soul gem it will fill.