Need help finding certain items

Hello, I was wondering if anyone could help me figure out how to get the following items and what they do.

pill of upgrading
Gift of forgetting
Book of Wisdom
Tomes/Genes
Scroll of [Stat]
Potion of forgetting

thank you for any and all help.

Pills, Books, Tomes and Genes are rare loots. As far as I know, your best bet to target these is fulfilling prophecies.

The Scrolls and “forgetting” items will be available to you in certain God shops once you accrued enough Favor with them.