Command

If you have a book with a //generate command in it in you secondary hand, it will take it, and then you can place a cube with that shape, the plugin comes with 70+ //g commands grabbed from many places. Command example: thresh=xx+zz; perlin(1,x,y*3,z,2,1,1)>thresh ,(you don't need the whole //g material .., you only need the expression part) credits to Zeranny and eztaK_red