Looks like the "Goat Magic" is the next big challenge. I'm thinking they should be SLAs that the Goatlings gain as they increase in HD. Here's what the original had:
Level 1:
Detect Magic once per day (as the 1st level spell).
Level 2:
Protection from Evil once per day (as the 1st level spell).
Level 3:
Discerp once per full moon (new 2nd level spell).
Level 3:
Empower once per round (innate ability).
Level 3:
Lesser Binding once per day (new 2nd level spell).
Level 5:
Veil once per day (new spell 3rd level).
Level 5:
Dispel Magic once per day (as the 3rd level spell).
Level 7:
Dimension Door once per day (as the 4th level spell).
Level 7:
Sunfire Whip once per day (new 4th level spell).
Level 9:
Contact Outer Planes once per week (as the 5th level spell).
Level 9:
Magic Jar once per month (as the 5th level spell).
Level 11:
Greater Binding once per month (new 6th level spell).
Level 11:
Anti-Magic Shell once per day (as the 6th level spell).
Level 15:
Summon Coven once per month (new 7th level spell).
Most of those are standard spells and we've already done Discerp and Empowerment.
That leaves Veil, Lesser and Greater Binding, Sunfire Whip and Summon Coven.
The original Summon Coven has no hard-and-fast rules about what it can do. I'm thinking we should write it up as a technique to gather (and potentially store) empowerment points that can be used to boost Goat Magic
veil and
binding spells, but we could say there are rumors it can be used to create other effects such as a
wish or epic spell.
There's some similarity between Lesser and Greater Binding and the
binding spell, so we can probably crib some bits off that. We might want to change the name so it's not confused with the SRD
binding spell.