HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

Recently, I noticed that when the guild rebuilding feature is enabled, the following occurs with the Necropolis faction. When building a Guild Master, the chance of receiving the Animate Dead spell is astronomically high. However, with the rebuilding feature enabled, it seems like the spell is randomized and its chance is reduced to be on par with other spells of that level. Is there a way to definitively check this and fix it if it's true?