I have a Ralts that I haven't been paying attention to lately, so this is good practice.
Gallade
Steadfast
Coba/ Kasib Berry
Night Slash (for pesky
DarkGhost-types) I meant Ghosts...
Rock Slide/ Stone Edge (for pesky Flying-types)
Psycho Cut
Thunder Punch (more Flying-types)
I'm not a master at this, but I like to make movesets.