Had a fun session last night - and made up a shop on the fly
So the players went to the Pit of Blood and Good Fortune to watch a good old fight and as expected, didn't leave without a bit of poking around.
However, they didn't discover that Sylgar is constantly dying and being replaced before they left.
When on the surface they were asking around for information and I let slip that there is a place in Waterdeep, in the Castle Ward, that sells pets and pet fish. The players intentions were nebulous at best, but lo and behold I improv'd a store as follows:
Name: Fish n' Bricks - We sell pets but mostly pet fish
NPC: Old Man Chancy - has an ear trumpet and can't hear.
Description: Small brick shop nestled in an alley in the Castle Ward, wooden sign out front with a fish inscribed on it. The window as the name of the store. Inside, an old man with whispy white hair is peering at the party through his thick glasses. He wheezes out welcome to Fish n' Bricks.
As the party pokes around or talks to him they will almost immediately find out that he does sell goldfish and goldfish food. He will take them to the goldfish aisle where a large section of 100 gold line a wall, all 100 of them are identical size and have a sign over them that says "reserved". If questioned he says its Xanathar business and mums the word. If they persuade him that they are there on behalf of Xanathar he acts confused and asks if Ott sent them.
Lo and behold, the fish are for Ott because he keeps needing to buy new ones.
The party made the dubious choice to ruin the poor mans fish food and kill all the fish.