Per 
The Dark Saint
Object Class: Keter
Special Containment: It is to be kept in 20x30x25 meter containment chamber. The chamber needs no cameras or any surveillance equipment. There is to be a one-way viewing window, so researches can see it, but it can’t see them. If it escapes or needs to receive a cell transfer, the containment team is to wear specially designed mask, so that it can't send you to another dimension. The way it sends you into another dimension is by staring at you intently, with a grim look in its eyes. You will soon be transported to another reality, which is expanded upon in the description. While wearing this mask, approach it slowly. If it sees you as aggressive, it will become aggressive, ripping off your mask, and possibly your head in the process. While slowly approaching SCP-3648, you must carefully raise our syringe when close enough, and slowly inject it. Inject it to fast, and you will die. Tranquilizers have no effect on SCP-3648. One he is sedated using the syringe, he must be loaded into a transport vehicle, and transported back to his cell, or to a new cell if needed.
Description: SCP-3648 is a 6 foot tall angel. But something is different about this angel. Everything except for its eyes are black. Its eyes are silver charm gray. It has a halo suspended 10.16 centimeters above its head. It has been described to have limited shape-shifting properties. There are three known forms it can transform into. It can transform into its same shape as usual, which is an angel, but with six tentacles protruding from its chest. It can also shapeshift into a giant spider. Its final known form is a 7 foot tall pale skinned humanoid with no ears, a nose, or a mouth, All it has is its eyes. It also has sharp pointy hands that can stab through human bone and skin, penetrating the bone marrow, and causing heavy bone damage. If it sees a human, it will stare intently at them, before transporting them to its reality. It has reality bending abilities, as mentioned earlier. If put in a cell with it, it will stare intently at you, if you make eye contact. Once you make eye contact, you are unable to look away. You will slowly feel your soul being sucked out of you. Before you know it, you are in a dimension of endless darkness. You start to feel nauseous, and die 2 hours later of an unknown sickness.These reality bending abilities are shut down by a Scranton Reality Anchor. Of course, though, the tiny handheld SRAs aren’t enough to stop him.Once it escapes its chamber, it can use these abilities. As long as it's in its chamber, it can't use these abilities.
Addendum: At several points in time, including ██████, █████, and ██████, SCP-3648 has been captured by different groups of interest, including Chaos Insurgency at one point in time. Below are email records between two friends who discovered SCP-3648.
