I have a good combo for Dark Hypno.Here is how it works. Poke 
Flute is pretty useless right? Wrong.You can use it by doing this. If you have 
Dark Hypno out, you can  play Pokeflute, revive one of your opponents 
Pokemon ,and use Bench Munipulation. Bench Munipulation allows your opponent to 
flip a coin equal to the number of pokemon on his/her bench. For each tails ,do 
20 damage to his/her Active Pokemon. And as the saying goes,the more the 
merrier.