Okay, I found the place where I got it. You can download it as a .zip from
the internet archive.

--- Mystic BBS v1.12 A43 2019/03/03 (Windows/32)
* Origin: Black Flag <ACiD Telnet HQ> blackflagbbs.com (80:774/22)
■ Synchronet ■ Freeway BBS, Bendigo Australia. freeway.apana.org.au