So, it's a KoL bug when something is disallowed in standard but is not listed in standard.php.
I'm in a Standard Hardcore run.
I've been wondering why the Maximizer keeps suggesting "Fifteen Minutes of Flame", but when I try casting it, it doesn't get cast.
Looking at my DEBUG log: "That skill is too old for this path."
I learned it from "Pop Art: a Guide" - from Gingerbread City.
standard.php lists that item.
standard.php does NOT list that skill.
I reported the bug to KoL. Maybe they will fix it. Maybe not.
Perhaps we could/should have a kludge list of stuff which SHOULD be in standard.php - because KoL will prevent you from using it in a Standard restricted run - but is not (yet)?