I recently got a QoT and when I fired it I realized that it doesn't pierce and hits only the first thing. So I wondered: Is it possible to make it so that archer's quivers can go pierce?
You can make anything pierce. You'll just get disconnected if it hits more than one mob. It's kind of super easy for the server to detect that kind of stuff.
As @NixusenZ said, You can but there really is no point. You get d/ced very quickly, similarly for using no-clip for too long.