Here are the combinations for the invaders who are otherwise
unavailable.
When collecting bodies:
- Invite a merchant and a pirate : a pesky little carpenter will come
with them
- Invite a general and a wizard : an annoying messenger comes with
them
- Invite a magic doll and a psychic : a curious little alien tags
along
- Invite a gem guard and a swordsman : a witch comes along with them
