An i have a combination to lock your opponent into a status move, which will ruin those boosters.
First send in a kadabra (or someone to set up stage one)and wait for someone to use a boosting move like Calm Mind. Then use Encore to ensure they keep using Calm Mind for a while. If they dont switch you can move on to the next step.
Switch into a Choice item pokemon(Band,Specs,Scarf, though the Scarf works best.) like this guy and have it use trick while the person is locked into Calm Mind. They are now stuck to not using that boosting move for the rest of the match.
P.S. i used these guys as an example because they are what im using one one of my NU teams.