Read a substantial amount (5 FATE)
From Fallen London Wiki
This page contains details about Fallen London Actions.
It'll cost you something ineffable, but the insights might be worth it.
Game Instructions: This will allow you to increase your Favours: Tomb-Colonies up to a maximum of 7.
Locked with Favours: Tomb-Colonies 7
Cost: 5 FATE
No reward narrative information available for Fate-locked actions.