Carl's Heavenly Mark
Back on Efretta, Tenebris had just reformed his body from an obscure smog disguised as fumes from a blacksmith's workshop. He had been practicing his concealment technique for almost his entire life, and he even managed to evade William's detection for years.
That said, William had just Ascended and there was no more need to hide. Tenebris became his usual self and contacted one of his few remaining subordinates with the Space Element, asking them to create a long-distance portal for him to the Velos Continent.
Since the Space Mage wasn't nearly as Talented as William, they needed to create multiple exit points that hovered over the ocean, but Tenebris was able to protect the subordinate from any rampant Magical Beasts.
Only a few hours later, Tenebris reached the Velos Continent, where he hired a Miasma Navigator to lead him towards the old Revista Faction's territory, now renamed to the Frostile Faction.