Well, this image seems to focus almost entirely upon the notion of Murasa as a grudge-bearing ghost, along with the notion that she's a nautical-themed ghost.
The best match I can come up with with is The Moon - the card of dark impulse and insanity.
The ghost type Murasa is based upon is a ghost that kills not just without remorse but without even much meaning - she drowns others simply because she was drowned, with no means to negotiate or reason with her. ("Some people just want to watch the world burn.")
In that form, she is something swallowed up by the madness of The Moon, without escape, and utterly chained and crippled by it.
