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 (it knows).