Per 
CAPTION-GOES-HERE
Item #: SCP-6584
Object Class: Keter (indicate which class)
Special Containment Procedures: [SCP-6584 is kept in site-19, heavy contaiment zone, area A in 6x6x4 meter cell made of titan and magnesium with 2 security guards. If SCP-6584 start saying something it need to be immediatly report to senior researcher and gas must be vented to the cell to get SCP-6584 to sleep.]
Description: [SCP-6584 is humanoid made of dark matter that is for now unknown. Is 2 meters tall and weight 150 kilograms and instead of normal nails it has longer and sharp claws. SCP-6584 is extremely agressive against human race. Before was SCP-6584 secured it kills peoples with this technique: It will teleport against victim and wait after a few seconds it will do a whispered voice to force the person to look behind him but before the victim turns behind to look at the SCP uses its extremely sharp claw and pierces the victim's chest. The victim will not die as soon as it would be normal but will be in a paralyzed state in great pain and will roar and shake due to extreme pain.
When was discovered:
SCP-6584 was discovered in 1994 on Iceland due to unknown dying people to pierces chests. After a week SCP Foundation has start to capture 6584. MTF Operative has found a diary of one citizen. ]
Addendum: [Optional additional paragraphs]
[[Diary Log Day 1:
Ok this is █████ ███████. I write this diary because last night police discovered a dead person. H- H- He died because his chest was crushed. Police says to us in order that to barricade at home until broadcast will say something.
Diary Log Day 2:
At morning broadcast say next: “This is broadcast from major of city. The person who killing peoples is now identified. Is male probably 50 years old and covered in shadow. If you see him immediatly run away and seek. Military actions will start after week. End.” I am scared. He is covered in shadow?! Thats weird.
Diary Log Day 3:
My food supplies just thinnering. I need go to store for some meat. Luckly I found a rifle with 5 bullets at home. I decided to go to store but with caution.
Diary Log Day 4:
I made it? I made it! I survive the night in store!
Diary Log Day 5: In night I heard screams of pain a few meters next to my house. After hour again.
Diary Log Day 6:
(this last log was whole covered in blood)
]]
