Sigil of the Harpy

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==Description==
When the Maelstrom grew out of control, shimmering across the multiverse and summoning creatures from beyond this world, the Elder Races retreated to their vaults. This voluntary exile gave them time to research and prepare weapons with which to fight the things from beyond.
This Sigil is the result of this research. Using this Sigil provides a person with an otherworldy trait for a while - in this case giving them the ability to cling tenaciously to walls when they should have fallen.