You can get an all-new Shadow Form in the game, thanks to a brand new item, the Shadow Stones. Nope, the Marvel crossover is over, this is a Fortnite original. When you use a Shadow Stone you'll enter your Shadow Form. You'll be invisible to enemies when standing still, and completely unable to use weapons, but you'll be able to speed across the map and jump higher than ever, with less threat of fall damage. It lasts 45 seconds, so make the most of it, and use the Phase ability to pass through objects and across the map quickly by tapping Alt Fire twice.