If you're looking for Mythic weapons in Fortnite Chapter 2 Season 4 then you might be scratching your head and wondering how exactly you can find Groot. Well, the answer is a bit more complicated than you'd think... well, not really, because you can't find Groot in the game. He's not a boss that can be eliminated for his loot, so to get Groot's Bramble Shield Mythic, you will need to look elsewhere!
Groot's Bramble Shield can be found by heading to a Quinjet location. The jets will land on the map each round, and will spawn some Stark Robots as well as Drones. The drone is what you will need to shoot down to hopefully get the Mythic item. You will want to be careful of the Stark Robots, they are your basic henchman type NPC that will shoot at you if they see you.
So, what does Groot's Bramble Shield do? Well, when you use it you will enter into Groot's ball of branches which protects you from gunfire and will heal your health up if you are missing any! It basically acts like the Baller vehicle from a previous season, and is a good option for getting out of trouble or traveling faster to get to a new zone. After you've used it, it has a 25 second cooldown before you can use it again.
You can check out a video of how to get this item right here: