Complex sentence: The Book of Monsters succeeds in consuming the Book of Betrayal, but Jestro, Robin and the other Nexo Knights are able to stall him from consuming Clay and with the use of Techcaliber, Clay uses Merlok to destroy the Book of Monsters once and for all.
Split into simpler sentences: The Book of Monsters succeeds in consuming the Book of Betrayal, but Jestro, Robin and the other Nexo Knights are able to stall him from consuming Clay. With the use of Techcaliber, Clay uses Merlok to destroy the Book of Monsters once and for all.