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I looked at Morpheus' Status and the many Abilities or well, the Spells he obtained after his new upgrade, and they were all rather powerful.
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Abilities: Dream Manipulation, Nightmare Manipulation, Dream Storage, Nightmare Slash, Dream & Nightmare Distortion, Dream Destruction, Nightmare Absorption, Dream Restoration, Dream World Travel, Summon Nightmarish Skeleton Knights…
Dream Soul: Morpheus' Soul is made out of Dreams themselves, and cannot be easily destroyed or extinguished, while also being able to regenerate by absorbing Dreams and Nightmares.
Nightmare Curse: Conjure a powerful Curse upon a target that will torment them with Nightmares even during the day, with different effects each time its conjured.
Soul-Eating Nightmare Domain: Unleash a small domain made of Nightmares that is capable of slowly devouring the exposed soul of any foe inside. If protected, the soul's protection will begin taking damage instead until it breaks.