Knife Tool

I was playing around with low polygon shapes and was trying to find a way to add another line of polygons. It would be great to have a knife tool to add extra line of vertices. This for me would be a great help to add extra geometry without adding other low poly tools. A bit like the split tool but it just adds a line where needed and keeps the object as one.

If there is something in Nomad that can do this then please point it out as I can’t think of any other tool that can do this simply.