The Tavern

How many aut/turns of invulnerability are left when Death's Door returns:

I found this in duration-data.h , L270-276:

It was the only file which had the expiry message, but I am unsure what it exactly means. The time remaining on DDoor after the expiry message is not constant - either related to the duration of DDoor or is semi-random.

Posting here instead of Coding due to higher traffic.
Thank you.

from what I understand reading the code, the message occurs when the duration has 10 turns left, and the game removes 1d5 turns from the duration when the message is played so you have between 9 and 4 turns left before it expires