Dungeon Crawl Stone Soup: Now with 50% more Sigmund

[factotum]

Also, what's the point of drinking a potion to identify it? Won't it be gone after that?

Yes, but you would then immediately know that any potion you find which looks the same is a Potion of X. Better to know you have a Potion of Healing in your inventory rather than having to drink through lots of random stuff when you're almost dead in the hope you find one!

Have you not played Roguelikes before, incidentally?