Lego Nexo Knights Season 4 Episode 6 Krakenskull Episode Title:Krakenskull.Episode Description:After obtaining the Rogul that is associated with the Forbidden Power of Metal-Morphosis (which possesses the ability to turn gold into lead), Jestro and the Cloud of Monstrox buy and reanimate the petrified Lord Krakenskull, his Krakenbeast, and his army who were unearthed by Jorah Tightwad. When Lord Krakenskull uses his amalgamated Forbidden Power of Petrified Quake (which allows his Krakenbeast to generate earthquakes with a stomp and petrify objects with a roar), it petrifies the Nexo Knights vehicles causing the Knights to retreat. When they regroup even with a combo Nexo Power, Lord Krakenskull's army proves to be indestructible until Clay arrives, destroys the Forbidden Power of Petrified Quake enough to undo everything it had ever done, and unleashes a violent frenzy which is only halted when Ruina slows him down. Clay rejoins the Nexo Knights, although Ruina's plans are furthering into motion. After the Stone Monster Army retreats, they begin to head to Mt. Thunderstrox. Before that happens, Jestro uses the Power of Metal-Morphosis on Jorah Tightwad's gold city and coins as payback for cheating him and the Cloud of Monstrox out of the stolen gold they had previously stolen from Stinkin Rich and Happy Hill .