I'm trying to locate a prestige class.

- The prestige class is designed for wizards.
- One of the requirements is the feat Craft Wondrous Item.
- The class description mentions that the wizard studies and creates life.
- The class enables the wizard to create a familiar rather than summon one.
- It might give the wizard access to healing spells.
- The capstone ability is that the wizard can make a golem.
- I remember the illustration showing a wizard over a cauldron.

What's the name of this prestige class and where can I find it?