Skadegamutc sounds like Skudakumooch: Ghost-Witch is a famous Ghost-Witch among the Indigenous Passamaquoddy and Mi’kmaq lore.
Legend dictates Skadegamutc was birthed from the dead shaman’s corpse who practiced black magic; the demonic entity then rises each evening with murder on its mind. The Ghost-Witch can be terminated with fire. Caution is advised when approaching Skadegamutc, even hearing their voice or making eye contact may usher a dreadful curse on reckless hunters.
Source & Reference:
Algonquian Spirit: Contemporary Translations of the Algonquian Literatures of North America (Native Literatures of the Americas) Editor Brian Swann
Photo in Public Domain