Sandman Spike = Sleep atrrib - Need to be able to kill plesioths.
Djin = Fire attrib - Need to be able to kill rathalos.
I dont really use SnS but i have a couple and i forget their base weapons which theyve upgraded from, but if anyone can help or you search on google for these you may be able to find the ones that upgrade into these, later on being able to make them