Familiars

James Young posted an idea that makes familiars kind of fun:

• A magic user can get a familiar for free if they want.
• You can make it run around and stuff and I guess it can tell you things that it sees.
• It can hold an extra spell for you and cast it like normal.
• It can't die but you can interrupt its spell casting.
• When you die, it erupts as a Summon spell with HD equal to your level.