"Also known as the Trimpma Sutra, this book will help your Trimps make more Trimps"
Potency is an upgrade which increases breeding speed by 10% compounding.
It drops every 5 zones starting at zone 5, always appearing on cell 30.
The first Potency upgrade costs 1000 science and 4000 wood. Each new Potency upgrade costs 1.4x more than the previous one.