Heir of Fire (Throne of Glass, #3)

by Sarah J. Maas

Without all three keys, he is limited. He can only open the portal between our worlds for short periods, long enough to let in perhaps one prince to infiltrate a body he has prepared. But with all three keys, he could open the portal at will—he could summon all the Valg armies, to be led by the princes in their mortal bodies, and …” Maeve looked more intrigued than horrified. “And with all three keys, he might not need to rely on magically gifted hosts for the Valg. There are countless lesser spirits amongst the Valg, hungry for entrance to this world.” “He’d have to make countless collars for them, then.” “He would not need to, not with all three keys. His control would be absolute. And he would not need living hosts—only bodies.” Celaena’s heart stumbled a beat, and Rowan tensed from his spot on the ground. “He could have an army of the dead, inhabited by the Valg.” “An army that does not need to eat or sleep or breathe—an army that will sweep like a plague across your continent, and others. Maybe other worlds, too.”

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