That is prop of a "Thumper" from movie Dune 1 and 2. I scaled it to something similar in size as in film. This is first version so it doesn't move. Also I wanted to stick it into flower pot so i made spike little thicker. Also splitted it in such way that join shouldn't be visible. Have fun

PS. I'm working on moving version because why not

PSS. I did it without supports, your setup might need them