Lileddivert

Hi I am struggling with Hannah before Sinnoh i have already lost many times against her. What are the tips ? I already have snowbro, snorlax but they get one shotted or almost and my only pokemon surviving a little bit is gyarados but he doesn't last long. Someone has a cheat pokemon against her ? I saw that seaking lightning rod is patched and I don't know all the techniques with pokemon countering each other (i just look up what type counter what but not in detail). Thanks !

IGN : Lileddivert Answer 1 : Uxie can do that Answer 2 : It is said that when Arceus created the universe, he made an egg containing all of them