Note from Krancor

The Note from Krancor is a joke item can be found in Baldur's Gate: Enhanced Edition in the Black Pits. When you speak to Krancor the Old (Leader of one of the fighting groups) in their cell, any response other than "im just going to walk away" ends with him giving you a scroll addressed to Aluend the Illusionist.

In-game description
"To Aluend the Illusionist,

Happy Birthday!

From, Krancor"