Decided not to add any Celestial critters afterall, but I am adding in more potential types of Familiars (should be finished with that today, along with the basic initial pagemaking -- then I still have to do the index, TOC (easy), and page references.
I have also changed the Summon Familiar spell a bit. Nature Spirits and Minor Demons and Minor Devils can no longer be gotten on the basic roll. To get one of them as a Familiar, you will need to earn Boon Points on casting the spell and spend those Boon Points accordingly (each Boon Point allowing the player to adjust the roll for a Familiar by up to +/-2 Points
Each type of Familiar will have an entry under the Familiar Spirits creature description that looks something like the following:
Cat - This is the form of a normal house cat, about 12 to 16 inches in length and weighing up to 12 to 15 lbs on average. Cats come with many different colors and patterns on their fur. Cats all possess Greater Nightvision, as per the Talent (see p. xx) and they receive a +10 to their Stealth skill. A Cat familiar will grant its bonded spell caster a +2 to both his Stealth and Perception skill rolls.
So, in addition to having its own abilities, the Familiar will grant its bonded spell caster with some sort of minor bonus. Here is a list of all of the creatures that can be acquired as Famailiars. This is by no means a complete list, but it will provide for a greater variety, I think.
Ant, Giant
Bat
Bee, Giant
Butterfly, Giant
Cat
Chameleon
Fox
Goat
Hound
Lizard
Owl
Racoon
Rat
Raven
Spider
Squirrel
Weasel
Wolf