Elite Four Bruno

Hello, I'm a new member. I would like to know if exist a method for modding moves of generation six/seven with HeX tool. I would like to change some move's effect (like night shade, dragon rage, u-turn ecc...), or if is possible changing the animation linked to a move (for example, in generation seven Feraligatr use its mouth for Liquidation, I'd rather the claw).I hope it's all clear and you are able to help me. Thanks.