You need to find Doja Cat, or The Mother of Thorns, if you want to complete the quest "Pull Consumables with the Thorn Ripper" in Fortnite. The Thorn Ripper is her signature Mythic weapon, which means you have to find the Mother of Thorns mini-boss, defeat her, and grab this item when she drops it.
Then, with the Thorn Ripper in hand, all you have to do is hold the secondary fire to make the weapon spin, aim at a consumable on the ground, and press the primary fire without releasing the weapon. It will make the Thorn Ripper extend to the area you were aiming for and pull whatever items were there closer to your character, just like in the GIF below.
