Be All My Sins Remember'd

The kuo-toa are a piscine race with a psychic affliction
that makes them behave erratically and invent gods when
feeling threatened. That same affliction gives them the
power to bring those gods to life. Blibdoolpoolp is the
most widely worshipped, and thus most powerful, of their
gods.

Blibdoolpoolp views the kuo-toa as her children despite
having been born after them. Like all good mothers,
she nurtures and protects. One of her chief concerns is
understanding the kuo-toa’s psychic affliction, which
causes them to undermine themselves whenever they
strive for greatness. She discovers that a corrupted elder
brain deep in the Underdark has a connection to the race;
though the connection gives them psychic powers, it also
turns them into powerless thralls, explaining their selfdestructive
behaviors.

Constrained by the same leash on her children,
Blibdoolpoolp seeks adventurers to destroy the elder
brain. Its death would free the kuo-toa, but potentially
at great cost: if the kuo-toa lose their powers, will
Blibdoolpoolp die?