It's good place to link some Pokemon move that can bring advantage like:
Hypnosis and Dream Eater (Ralts, one of many Pokemon that can learn the moves. It cause lot of damage and healing yourself too!)
Mind Reader and Sheer Cold (It's one of my favorite, Articuno can learn the moves. Your opponent is KO in one turn!)
Sunny Day and Solar Beam (Moltres, one of many Pokemon that can learn the moves. You no need to wait, it cause damage in instant)
And there's many move of it. If you wanted to know, check this link (question).
Hope this question help you :)