It starts in a abandoned building I'm being chased by family I come to a black door I go through I'm on a catwalk I have to crawl on the platform to reach the other side of the room I escape I land in a different room it a theater and I see eyes amount the seats I hear a voice starts singing.its enticing like a dark dream a man appears his eyes are dark red and long blonde hair. He tries to speak but I can't hear what he says like a barrier is between I start press my hand in the air between and his voice comes through but I don't like what I hear I see a wall fall behind as he grins. There's a lake of blood running underneath. He says welcome to your true birth nature I look away to see a coffin adorned in black and gold but everything fades and I'm standing in a barn rafters I begin to summon demon and skeletal soldiers they rise from the ground and run towards an group of people but I cant see who they are. That's when I wake up
I don't know exactly what this means, but it's a bad omen. Sort of like seeing a black butterfly in your room. The advice I give you is be careful. Seeing a red river though is not bad. Usually means a gift or hidden ability you have, such as mediumship or empathy.