The Raven Queen

The Raven Queen is the lord of life and death. Once a powerful and beloved queen in the Feywilds, the Raven Queen attempted to ascend to divinity to aid in the war between Corellon and Lolth.
However, it backfired due to meddling by power hungry wizards among her followers. Cursed to the Shadowfell and Feydark, she now collects memories of pain, grief, and death to help mortal souls become purified by facing thier grief. The wizards who meddled were turned into the dreaded Nagpa that now stalk the realms.