Trap the Soul

Note that items with the Trap the Soul (item enhancement) have no Hit Die requirement or material component.

Possible Soul Gem distribution issue
When in a group the soul gems you create by using this spell can be picked up by any member of the party. This should be considered before using this relatively expensive spell.

Soul Gems reported
Note that all gems other than Soul Gem: Essence of Earth are solely used in trapmaking. Soul Gems can be stored in Small or Medium Soul Bags.

Elemental Soul Gems

 * Soul Gem: Weak Essence of Earth
 * CR3-5 Medium Earth Elemental, 10HD version (The Depths of Discord on Normal)
 * CR9 Mudman, 10HD version ([The Red Fens])


 * Soul Gem: Essence of Earth
 * CR7 Earth Elemental, 20HD version (The Depths of Discord on Hard, The Depths of Despair on Elite, The Iron Mines: Justice for Grust (part 2 of Grey Moon Waning, Taming the Flames on Hard has 20+ Earth Elemental)


 * Soul Gem: Strong Essence of Earth
 * CR 10 Earth Elemental, 30HD version (Threnal Ruins)
 * CR 14 Earth Elemental, 30HD version (Vale of Twilight)


 * Soul Gem: Weak Essence of Fire
 * CR3-6 Fire Elemental, 10HD version (depths - barrel, Spies in the house)


 * Soul Gem: Essence of Fire
 * CR7 Fire Elemental, 20HD version


 * Soul Gem: Strong Essence of Fire
 * CR9 Fire Elemental, 30HD version (Taming the Flames on elite)




 * Soul Gem: Strong Essence of Air
 * CR11 Air Elemental, 30HD version (desert explorer area)


 * Soul Gem: Weak Essence of Water
 * CR3-5 Water Elemental, 10HD version (Storming the Beaches)
 * CR11 Water Elemental, 20HD version (Eyes of Stone, Normal; CR12 Hard)


 * Soul Gem: Essence of Water
 * CR15 Water Elemental, 30HD version (Eyes of Stone, Elite)

Outsider Soul Gems

 * Soul Gem: Essence of the Rebel
 * CR16 Ghaele, 20HD version


 * Soul Gem: Essence of the Undecided]
 * CR8 Greater Air Mephits
 * Possibly other Mephits and Neutral Aligned Outsiders


 * Soul Gem: Weak Essence of the Destroyer
 * CR12 Flesh Render (Invaders on Casual) 10HD version


 * Soul Gem: Weak Essence of the Undecided
 * CR0.5 Young Ice Mephit (korthos island), 10HD version


 * Soul Gem: Essence of the Dominator
 * CR15 Bearded Devil (Vale of Twilight)
 * Efreeties (Court of Lailat)

* According to Litany of the Dead riddle;
 * The Crusader - Lawful Good
 * The Destroyer - Chaotic Evil
 * The Rebel - Chaotic Good
 * The Dominator - Lawful Evil

Others

 * Soul Gem: Weak Giant (smells like cheese)
 * CR7 Troll (The Forgotten Caverns, Hard) HD10
 * Soul Gem: Weak Reptilian
 * CR3 troglodyte
 * CR1 kobold
 * Soul Gem: Weak Human
 * CR3 human
 * Soul Gem: Weak Elf
 * CR3 elf
 * Soul Gem: Weak Undead
 * CR 0.50 Zombie, 10HD version
 * Soul Gem: Weak Magical Beast
 * CR9 Fen Cat 10HD ([The Red Fens])
 * Soul Gem: Weak Aberration
 * Low CR Rust Monster, 10HD version
 * Soul Gem: Weak Vermin
 * Low CR Glass Spider, 10HD version
 * CR0.5 Ice Spider, 10HD version
 * Soul Gem: Weak Reptillian Humanoid
 * CR2 Troglodyte, 10HD version
 * Soul Gem: Weak Monstrous Humanoid
 * CR1 Sahuagin Warrior, 10HD version
 * Soul Gem: Weak Animal
 * CR0.25 Brown Rat, 10HD version
 * CR8 Mire Rat, 10HD Red Fens Slayera
 * Soul Gem: Weak Ooze
 * CR4 Gray Ooze, 10HD version
 * CR8 Ochre Jelly (The Forgotten Caverns, Hard) 10HD
 * Soul Gem: Weak Plant
 * CR9 Vine Stalker, 10HD version
 * Soul Gem: Giant
 * CR16 Fiendish Troll, 30HD version (Vale slayers)
 * Soul Gem: Reptilian Humanoid
 * CR15 Troglodyte, 30HD version (Vale slayers)

Reference

 * Trap the Soul, 20-30 HD results thread, by Angelus_dead
 * List of Soul Gems (colors, description text)