I don't think this description is correct. It seems the effect, (either blue map, treasure map, or compass) is random.
Curse of the Lost[]
If Curse of the Lost or an Amnesia pill is active on a floor, X-Ray Vision effect is provided immediately.
I'm pretty sure this isn't true, because I just used Book of Secrets on a floor with Curse of the Lost, and I did not get X-Ray Vision. I had to randomly put bombs on walls to find the secret room. I didn't remove it in case someone else wants to check first. MrCarth (talk) 22:06, 21 July 2022 (UTC)