You trick 1 poke then Dark Void either that or something else(their choice) and then they sit back and set up on you, until you run out of Sucker Punches, simply Taunt you, status you, or send in Wobbuffet and either make you use your 8 sucker punches then switch to a set up poke, or switch to a set up poke(depending on what you're encored into).That is what dark void is for, some simple prediction can disable their counter and net another swords dance.