I have an idea for an SCP. It is a humanoid creature that is labeled "Keter" not because it will necessarily kill you, but solely for the fact that it can compromise any containment cells within its vicinity through the use of "portals". How it spawns these aforementioned "portals" is unknown.
Now, the obvious problem about this SCP is that it might sound a bit too overpowered to some people. Currently, I'm thinking about putting a limit to how far away it can be in order for the effect to happen and perhaps even a list of materials that it has trouble getting through. However, I am open to any suggestions you might have about this.
Of course, this SCP will aptly be named between a choice of "Houdini" or "Breach". Please be aware that this is just an idea for an SCP that I thought interesting and that it isn't justified.
Thank you for the time you took to read this.