Download full size inforgraph here.
Thundurus Therian, the one with legs, that you can see at least. For PvP, I don’t see it getting much action, but it does show up as a Raid counter for you PvE types, not the tops, but might be good to round out your party. You never know when something becomes relevant out of nowhere!
How to beat a flying electric? Only Rock or Ice, and it’s hard to beat the Rhyperior here, please tell me you have one? Please trade for one, I have one for you, someone closer has one for you too.
Go to the official counters page for a complete list, including shadows and megas to see how your Pokémon perform.