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Power Master 1: A Strange Journey
In Power Master 1: A Strange Journey, Sleep Swords are rare weapons, only able to be bought from the Blacksmith in the Town of Dora. When equipped, it will increase the wielder's Attack by 40 and it has a 65% chance of inflicting the Asleep status on an enemy. Equipping it will cause the wielder to become stronger to Dark- and Physical-based attacks, but become weaker to Light-, Stone-, and weapon-based attacks.