The first boulder that is fused into Magnezone is from Steelix (both sides) and the tip on both is from Steelix too. The Onix I used are from Ruby Saphire and Platnium and the Steelix is Platnium.
There is a lot of scratch next where Onix joins to the Stellix and most of that was shading which in the light diagram I stuffed up... Hold your mouse half way between the sun and the 't' from light and thats where it should be