Description
This mod lets you soul trap NPCs. It also adds black soul gems to the game, if desired.
By default an NPCs soul is worth 10 times its level. This can be freely adjusted.
Black soul gems have a default chance of 20% to appear instead of grand soul gems in random loot.
This mod also fixes a vanilla Morrowind bug related to using soul trap on NPCs.

Compatibility
OpenMW: Not Compatible
Smarter Soultrap: Not Compatible
OAAB_Data: Compatible, will use the OAAB black soul gem instead if installed

Configuration
You can enable or disable the mod.
You can select if you want to restrict NPC souls to black soul gems only or any soul gem.
You can select if black soul gems should to be able to capture creature souls.
You can change the value and capacity of black soul gems.
You can select if you want Azura's Star to count as a black soul gem.
You can set the chance for black soul gems appearing in random loot. This can also be used to completely remove them.
You can define a list of NPCs that should be treated like creatures and do not require black soul gems to be soul trapped.
You can define a list of creatures that should be treated like NPCs and do require black soul gems to be soul trapped.
You can configure the value of NPC souls in various ways:

• By level: The soul value will be set to the NPCs level * a configurable value.
• By attributes: The soul value will be set to a sum of the NPCs attributes.
• By health: The soul value will be set to the NPCs maximum health.
• Fixed: The soul value of all NPCs will be set to a configurable value.
  

A combination of some of these methods is available too.
A custom multiplier for the resulting soul value can also be set to fine tune the result.

Installation
Install and update all of the requirements.
Copy the contents of the archive into your Morrowind installation directory.

Thanks
To NullCascade for implementing the necessary MWSE functions.
To Darkelfguy for featuring it in his "Mod of the Day" series.
To Danae for picking it as mod of the week: