Some of the rarest items in Diablo 4 are Unique. This rarity includes powerful, build-enabling effects and set affixes that aren't randomized. If you're fortunate enough to get your hands on some of Diablo 4's best Uniques, you'll be able to create some truly powerful builds that can handle most endgame content.

In this guide, we'll be looking at five of the best Sorcerer Uniques in Diablo 4, showcasing their unique properties and ranking them based on their overall potency in endgame content across many different builds.

Harlequin Crest: Gain [10-20%] damage reduction. In addition, gain +4 ranks to all skills.

That's best-in-slot for many Sorcerer builds since it massively reduces the cooldown of Defensive Skills like Teleport and Frost Nova. In addition, the Harlequin Crest rolls with some great defensive and utility stats like Maximum Health, Resource Generation, and Cooldown Reduction. But the Harlequin Crest has one major downside: it's absurdly rare. Even on Torment difficulty, the probability of getting Shako to drop seems incredibly low. The best way is to defeat Uber boss Duriel to get this item. Duriel needs to be summoned by spending two types of materials; Mucus-Slick Eggs and Shards of Agony. You can farm them self, or you can buy duriel materials on U4gm. Don't forget to use code "Mods" for 5% off!

Tal Rasha's Iridescent Loop: For each type of elemental damage you deal, gain [10-15]% increased damage for 4 seconds, up to [40-60]%. Dealing elemental damage refreshes all bonuses.

This ring grants a multiplicative damage bonus for each elemental damage type you've inflicted recently, stacking up to four times. Sorcerers can deal with three elemental damage types at once, but thanks to weapon tempering, it's possible to craft shadow or poison damage on your weapon. Activate that and cycle through your skills, and you have a permanent 60% damage buff. If that wasn't enough, Tal Rasha also has some S-tier affixes. Non-physical damage, cooldown reduction, resource generation, and Lucky Hit chance are incredibly strong for virtually every Sorcerer build in the game. 

Rain Of Starless Skies: Spending your Primary Resource reduces the Resource cost of your skills and increases your damage by 10% for 3 seconds, up to 40%.

If your Sorcerer build focuses on spamming a Core Skill, Rain of Starless Skies is an Uber Unique you should keep an eye out for. This ring reduces the mana cost of your skills for each skill you've recently cast, granting up to a 30% cost reduction. This bonus adds up quickly and allows you to spam skills like Chain Lightning far more often. It even increases your damage by the same amount, and its affixes substantially increase your critical stats.

Esu's Heirloom: Your critical strike chance is increased by [20-30]% of your movement speed bonus.

Esu's Heirloom grants a massive DPS increase to most builds in an item slot that's typically reserved for quality-of-life affixes. While equipped, a portion of your current movement speed is granted as a bonus critical strike chance, up to 30% at the movement speed cap of 100%. In addition, Esu's Heirloom also has critical strike damage as an affix, a stat you typically find on weapons and rings. You also gain mana cost reduction while these boots are equipped to make spamming abilities a little bit easier. These boots do a little bit of everything and are typically an S-tier choice for all Sorcerer builds.

Fractured Winterglass: Casting Frozen Orb has a [35-50]% chance to spawn a random Conjuration when it expires. Lucky Hit: Your Conjurations have up to a [50-70]% chance to launch a Frozen Orb at nearby enemies.

Fractured Winterglass has introduced an entirely new style of build for Sorcerers, one that utilizes the Conjuration Master passive to scale damage, movement speed, and mana regeneration. Fractured Winterglass causes your Frozen Orb explosions to create Conjurations that will attack nearby enemies, which can then spawn Frozen Orbs of their own through Lucky Hits. An optimized build can maintain roughly 12-15 Conjurations with this amulet, which is still nothing to scoff at. Scaling Conjuration Mastery and allocating Conjuration nodes, you can create a build that can speed farm Helltides and Nightmare Dungeons faster than any other build in Diablo 4.