In the Eden storyline, we find out that Gaia has the ability to open voidgates and summon voidsent in battle, an ability that we see her use when we first encounter her wearing the Voidwalker armor in Eden's Gate: Descent. At what point did Loghrif learn Void Magic, and were there others in the Convocation who made pacts with denizens of the Thirteenth, perhaps as part of the war between Allag and Meracydia?