We're currently 6th level, if he has already used Bonethrall to control a 6HD undead monster can he use Bonethrall on a second 6HD undead or can he only have up to 6HD of undead Bonethralled at one time?
How many HD of undead can a grave walker control with Bonethrall. I read it as 1 HD per character level, but a member of my party has been using it at "4 x character level" = total HD and i think that's way over powered.
