Entity Vita

Entity Vitas contain the soul of a certain monster or animal. You can use them to make Statues.

To obtain an entity vita, just kill a lot of mobs. Sooner or later one of their souls will materialize for you to pick up!

Spawning a Vita
You can spawn a vita of any entity using a give command, like so:

/give @p yegamolchattels:entity_vita 1 0 {vitaEntityID:"themod:TheMobID"}