Question: What is the time-travel agency called in the expanded fourth edition of the "GURPS" role-playing game published by Steve Jackson Games in 2005 that connects to GURPS Banestorm?
Sentence (from "GURPS Banestorm"): It details a fantasy setting called "Yrth" that has been updated from the older GURPS Fantasy source books Orcslayer and GURPS Magic (first edition).
Relevant evidence: No