Once, I killed a daughter of Thanatos, one of the Eumenídes, those that wreak vengeance from under the earth. I think you do not speak my language usually, but we have a saying to curse others, and invokes these Furies. Erinys was one. With her ability, I could also create shadows. I have held the light of Helios, of Eos. I say these things because they are true. So that you know that such things are common among our kind.
Practice with a dagger like yours. Good weight. Same size.