Upgrade dungeons to their hardest difficulty and plunder precious loot by acquiring Sigil Power in Diablo 4. As any long-time Diablo fan will tell you, finishing the main campaign is just the beginning. The same is absolutely true with regards to Diablo 4 , of course, which developer Activision Blizzard has filled out with lots of endgame activities to keep players slashing and looting for longer. Nightmare Dungeons serve as one such endgame activity that sit separate from Season of the Malignant , referencing a specific type of dungeon that is far harder than anything you’ll come across before you reach the end credits. But alas, you can’t enter one without first acquiring a substance known as Sigil Powder. If you’re a relative franchise newbie wondering how to get Sigil Powder in Diablo 4, then rest easy. It’ll require a lot of time and patience on your behalf, but this will ultimately be rewarded through the unlocking of those oh-so alluring Nightmare Dungeons, which are far and away some of the best locations in which to gain the most powerful loot and gear for any one of the five classes . It all begins with crafting Sigil Powder – we’re here to explain to you how this is done. Starfield gameplay includes jail, hiring workers and cargo smuggling, Bethesda Q&A reveals Our top picks of the best Xbox Game Pass titles you can play right now How to get Sigil Powder in Diablo 4 Once you gain access to World Tier 3 – done by completing the main campaign and finishing the Catherdral of Light Capstone Dungeon – you’ll be able to begin your journey to get Sigil Powder. The way you do this is by then unlocking the full potential of an NPC in town known as The Occultist , who will provide you with a ‘Savage Sigils’ option. Sigil Powder is received from The Occultist by selecting this ability and dismantling any existing Nightmare Sigils you already have. You might be wondering how you gain Nightmare Sigils before being able to dismantle them down to Sigil Powder in the first place. You do so by running other endgame activities, such as bounties from the Tree of Whispers, which will then see random Nightmare Sigils drop. The problem is these are totally random, and more often than not the Tier for the Nightmare Sigils you receive might not be of much use to you. That’s where The Occultist comes in again. By visiting The Occultist in town and breaking down existing Nightmare Sigils you have acquired through Tree of Whispers bounties and other endgame jaunts, you’ll receive Sigil Powder than can then be used to make better, improved Nightmare Sigils that are more relevant to your character’s level. Once you have enough Sigil Powder you can choose the ‘Craft Sigils’ option from The Occultist, who will let you craft Nightmare Sigils relevant to Tiers one to 100. The higher-tier Nightmare Sigils you have created using Sigil Powder can then be applied to existing dungeons to transform them into Nightmare Dungeons. The better the Nightmare Sigil, the better rewards the Nightmare Dungeon will yield. Prepared for a fight, though, because more powerful Nightmare Sigils will significantly modify the difficulty of the monsters you’ll see when inside. Congratulations! You now know how to get Sigil Powder and use it to your advantage.