I don't know Vodyanoi well at all, but he's been a repeat guest at the inn for centuries. He's practically family in this crazy mixed-up mythical clan. Plus, Daji clearly has a soft spot for him, calling him "Voddy."
The idea of him dying just so we can beat Lamashtu and the Consortium seems ...
I scowl. "I'd rather sleep with Lamashtu for a year. There's got to be another way."
Daji scowls, affronted. Her ears stand up. "Yes. A way other than that."
"He wouldn't last a year," Pazuzu adds, looking sympathetic. "So, it's acceptable for you to pollute your body and your soul, but not to let someone sacrifice himself? Bear in mind that this is a binding celestial agreement Vodyanoi and I made, long before your ancestors got together. This is an ancient debt that has come due."