I think banning mega heracross and kings rock would be the best option. Mega Hera is undeniably broken, but the other skill link users, cloyster and cincinno, are pretty easy to wall. However, if given a kings rock then they have the ability to bullshit their way past the checks/counter. It's almost like swagplay, except instead of getting confused and para'd, you just straight up die.
They may prove to be broken even without kings rock, but for now I say just ban mega heracross+kings rock and see how the meta is from there.
They may prove to be broken even without kings rock, but for now I say just ban mega heracross+kings rock and see how the meta is from there.