If you're looking for Mythic Weapons in Fortnite Chapter 2 Season 4, you might be scratching your head and wondering how exactly you can find Groot. Well, the answer is a bit more complicated than you would... well, not really, because you can't find Groot in the game. He's not a boss that can be killed for loot, so to get the Groot's mythical bramble shield, you'll have to look elsewhere!
Groot's Bramble Shield can be found by heading to a Quinjet location. Jets will land on the map every turn and spawn 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 watch out for Stark Robots, they are your basic henchman type NPCs who will shoot you if they see you.
So what does Groot's Bramble Shield do? Well, when you use it, you'll enter Groot's Branch Ball which protects you from gunfire and heals your health if you run out! 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 area. Once you use it, it has a 25 second cooldown before you can use it again.
You can watch a video on how to get this item here: