Final answer:
Nimue convinces Vortigern to release Merlin from prison.
Step-by-step explanation:
In the dim-lit dungeon, Nimue, with unwavering conviction, approached Vortigern. Her words, a tapestry of persuasion, painted a future where Merlin's wisdom could mend the realm.
Nimue eloquently spoke of unity, painting a vision where their shared goals could only be achieved with Merlin's guidance. Vortigern, initially resistant, felt the compelling force of Nimue's plea. Her sincerity and strategic reasoning melted the chains around Merlin's fate.
Swallowing his pride, Vortigern yielded, ordering Merlin's release. Nimue's diplomacy triumphed, unlocking the key to a brighter future for the kingdom, with the once-caged Merlin now poised to shape destiny.