I was speaking with you in the IRC chat, and I think some wires may have gotten crossed somewhere, so I want to break down the process for you (NOTE: I am not staff and not all of what I am telling you is site rules, just a description of how the process flows):
- A first-time contributor, before posting to the drafts forums, needs to come here and get an idea greenlit. You should have a solid grasp of the anomaly, its effects/abilities, and a narrative that is related to the anomaly in some way when posting to this forum.
- Critters will look at your idea and decide whether or not to greenlight based on if they think it has a good chance of becoming a stie-worthy article. The concept and the narrative are greenlit together. You do not need the idea greenlit before writing the narrative.
- If making a Sandbox to keep track of ideas and plot threads will help you, you are more than welcome to do that. However, in the ideas phase, critters want to hear the barebones ideas and you are asked to only post a sandbox link upon a critter's request.
- Once your idea has gotten 2 greenlights, you can make a post to the Drafts forum, where people can help you refine the clinical tone, format, etc. and get it ready to be posted on the site.
As your idea currently stands, it is lacking a clear narrative and appears to fall into the "superpowered humanoid" or "X-Man" category. These types of SCPs have been seen a lot on the wiki, so it can be difficult to make them stand out. They are not impossible to do, but it's gotten harder to make them fit modern SCP standards. If you want a good example of a successful modern superpowered humanoid SCP, I recommend SCP-4793, Stele.
We need to know more than just "it's a being that takes the shape of who it kills." What story are you going to tell - How The Foundation found it, Who or what created it and why, did someone use it to some end? (These are not all questions that must be answered, these are some possible narrative hooks.)
I also recommend reading a significant amount of the top-rated SCPs from the last several months, and focus on reading more recent SCPs rather than older series. Many early series SCPs would not last a day under current SCP standards, and a few are only still around because of their history with the wiki itself. (This does not apply to all early series SCPs, but many of these were written before the wiki's style had really been cemented.)
The anomalous entity, while important, is not actually the main focus of the SCP. A good story, a compelling narrative, something that makes the reader feel something - that is the goal of an SCP article. What feeling do you want to evoke from the reader? Horror? Empathy? Sadness? You need to create a narrative around this entity. You actually have a decent hook right at the end of your description that can be expanded on:
gaining access to their knowledge and using it for its own benefit.
What benefit? What is it gaining? What is its goal? The why of what a sapient anomaly does what it does is often the a very engaging narrative hook.
I am not saying this to discourage you, I just want you to understand the amount of effort that goes into creating a successful SCP.
If you can revise this idea with a story that you want to tell, we will be able to give you much more meaningful and constructive critique.
The anomalous being is the vehicle, the narrative is the person driving, the readers are the passengers. You can have the shiniest, most polished, most interesting vehicle in the world, but without the driver, the passengers aren't going anywhere. Where is the narrative taking the readers, and how is it getting them there?
