things you always need permission for:
1. Mythical or extinct familiars.
2. Familiars with magical powers (including shapeshifting familiars).
3. Some powers (such as invincibility, possession, hypnosis).
4. Blessings/curses (including werewolves/vampires).
5. Divinity/being an original fairy OR to have once been divine/an original fairy, even if you no longer are.
6. Having divine/god/original fairy parents or parent.
7. As a quadruplet or higher multiple birth.
8. As a character who is the twin or triplet of an existing character (however, you don't need permission to join twins/triplets if they are joined together).

first-time privileges
When you FIRST join Shaman, your first character is given +1 coin, which they can trade for a power or a familiar.
Any other character you join after that does not have a coin - therefore you cannot join them with powers/familiars without permission.