Hopefully you enjoy it, there's probably still some grammar issues despite me going through it twice because I am bad at that but I hope the concept is decent. Thanks in advance for feedback.
Verdict if you were to post this as is: Downvote
The main issue I have with this article is that it has no story behind it. It's just a thing what kills you, as well as that you tend to add more abilities to it as the occurrences go on. Also classifying it as Keter because of its unpredictability seems unwarranted. We have plenty of random/unpredictable SCP objects that aren't rated Keter.
What I suggest to fix it: As mentioned earlier, a story for why the reader should care about your SCP is crucial. Why would the statue come to life and why does it go crazy for killing humans? I think stating that the artist had nothing to do with it is a lost opportunity, you could've entered a backstory for him. Perhaps he owed someone a perfect glass statue? Perhaps he made the statue out of spite and anger for a previous tragic event, and it triggered an anomalous property to manifest?
In short, use your imagination to create a story to invest readers. A standard killing machine just won't cut it.