Download full size infograph here.
Nihilego is here for Gofest! It didn’t get the moves to make it useful, but it’s candy and dex!
What to use? Ground is super effective against rock and poison, so nothing else comes close. There is no ground Mega that beats these regular counters, so keep it simple!
Go to the official counters page for a complete list, including shadows and megas to see how your Pokémon perform.