Soul gems

Soul gems are items that allow the player to capture monsters, captured monsters to act as guard/attacker, capture monsters can be used for development of Transformation Seals. Soul gems have 5 levels, each being able to capture different monsters, every higher level gem can capture lower level gem monster.

At level 3, monsters become increasingly difficult to catch, requiring many tries depending on how low their health is (the lesser health a monster has, the easier it is to capture). This can be fixed by using higher level gems, which make capturing monsters more likely.

Crafting

Soul gem lvl 1	Soul gem lvl 2	Soul gem lvl 3	Soul gem lvl 4	Soul gem lvl 5	Crafting Station required
10x Chipped Amethyst	10x Flawed Amethyst + 2x Silver Bar	10x Amethyst + 4x Gold Bar	Found in mimic chests Dropped by Master	Found at the challenge chest on T-Rex's lair (prehistoric biome)	Advanced crafting table

Capturable monsters by gem

Lvl 1	Lvl 2	Lvl 3	Lvl 4	Lvl 5
Wisp	Guardian	Butcher	Mimic	T-rex
Chiken	Leaf lion	Hell dog	Tripod
Slime	Chenille	Lava golem	Mother Brain
Snow slime	Naga	Disciples
Sand slime	Boar	Soulsucker
Cavern slime	Ice eagle	Brutor
Night crawler	Yeti	Scavenger
Skeleton	Rock worm	Howler
Repty	Creep
Snow repty	Devourer
Sand repty	Raptor
Sand worm
Scorpion
Bat
Toxic bat
Tormented soul
Spirit