From a heart of a dead monster, you can summon a homonculus. It will obey and
worship the ground you walk on... unless your skill is too low.
Syntax: cast summon homonculus at heart set <name>.
Component: heart.
You can also use this spell to bring your homonculus to you. However, it won't
work if the homonculus is carrying any items. You do not need a heart for that
version of the spell, nor do you need to use a target.