Publisher's blurb: A one-shot conversion for Waterdeep: Dragon Heist The Black Viper is recruiting a team of thieves for her greatest heist yet: emptying the Cassalanter vault right under its owners' noses, during their yearly Founders' Day feast. Three separate keys and a secret codeword are required to open the vault, but she has a team of elite operatives and an arsenal of magical gadgets on her side. This is your mission, should you choose to accept it...