The only minor thematic change in v5.2 of the game rules is that instead of taking on the role of helping Galdor stop Feragot, now you ARE Galdor. The Galdor card from the 3rd expansion is simply your visible manifestation.

Skip the v5.2 game rules download and read the new lore change below:

INTRODUCTION

A demented telepath has invaded your mind with intentions of releasing an ancient evil you locked away in your psyche long ago. Visit your most potent reminiscences and utilize their abilities to reorient your mind to your advantage. Channel enough power from surrounding manifestations to permanently trap the intruder within an illusory prison while evading any mental threats capable of stopping you.