Yes, you healed the little buggers to death.Wasn't the only way to kill them back then to use healing magic?
Yes, you healed the little buggers to death.
The old Fiend Folio had a lot of oddities.
Just as a follow up. The Nilbog was originally from a White Dwarf magazine April Fool's Fiend Factory article, before it ended up in the Fiend Folio.
Wasn't the only way to kill them back then to use healing magic?
Tahw fi eht MD si eht Nilbog? S'tahw eht etisoppo fo 'Hcnup ni taorht?'My brain hurts! PUNCH DM IN THROAT!!!!

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.