rumor says there is one is scmdraft 2, can anyone confirm this or tell me how to use it?
There is the copy and paste function, if that's what your talking about.
i mean making half a map and clicking reflect over y axis
I've never heard of it. Apparently, no one else on SEN has, otherwise you would have had more responses. But that doesn't mean there isn't one. You can try to google it or something.
I don't see how such a thing could work, not every tile has a reflected counterpart.