By my blood (Patreon)

For a very brief stint last summer, Cass Cain gained blood magic powers in her Batgirl comic which she used to make blood swords and cut through a bunch of demons in DC's Spirit World setting which is basically a Chinese mythology inspired underworld full of things that need cutting through. It's pretty rad. Wish it lasted a little longer buuuut the writer said DC wouldn't let her keep the powers for too long. I mean I get it but ah well...