So, I've been trying to build a good competitive battling team, and I heard that Pain Split is a great move for Dusknoir to learn. So, I taught it pain split. However, every time I use it, the move just causes damage to my Dusknoir, and either heals or leaves the opponent with the same HP. I tried looking up how pain split works but everything was either hard for me to understand, or it gave me the wrong idea and didn't help me once I tried it out. Can someone please explain it to me in the simplest way possible, because I desperately want to know how this move works. I have no idea why this move is giving me such a hard time, I've been playing Pokemon since gen 3 and only got into competitive in Gen 5. You probably think I'm stupid, and maybe I'm just having a brain fart, but please explain pain split to me ;-;