S2·E1 The Nightmare Stone

After his defeat in ""Megaattack"", Zordrack crash-lands on a desolate asteroid, where he finds an energy crystal capable of causing nightmares, he names this crystal the Nightmare Stone and returns to the land of nightmares.

He makes plans to replace the Dreamstone with the Nightmare Stone inside the Dream Maker's tower, and cause the noops and all of the world's populance to suffer from eternal nightmares