Terrakion, it’s here, it’s important, get it! This thing is a fighting monster, shows up at the top of many counter guides, so definitely pick up a few with the special move. Extras to trade to your friends who might miss it!
Terrakion is so good, it beats up itself. Other wildly useful pokemon that show their faces again are Mewtwo, and Metagross, just can’t have a raid without them it seems!
Go to the official counters page for a complete list including Shadows and Megas to see how your Pokemon perform.