Diablo 4 Sorcerer BuildFireball - The Illuminator

As I mentioned before, we gain increased Critical Strike Damage from Destructive Fireball, an increase of 20% that is further increased to 30% if we hit 3 or more foes, which isn’t a hard task to accomplish, combined with our Aspect of Three Curses that further increases our Fireballs Critical Strike Damage by 20-40%, that is also doubled if the enemy is healthy gives us a naturally high Critical Strike Damage bonus.

We’ll be using all 4 of the Sorcerer's defensive abilities, allowing us the ability to survive most situations.

• Teleport should be used mainly in my opinion to engage but can be used to retreat until you get used to the play style, this is also how you would commonly play when you don’t have the “Raiments of the Infinite”.
• Ice Armour should be used when initiating, we don’t take any passives, but it’s an incredibly strong defence on its own. We do have the option of opting into its passive “Mystical Ice Armour” which increases barrier size when attacking vulnerable enemies, this can be effective if you have durability issues as we are always applying vulnerable.
• Frost Nova is our source of vulnerability, it's a huge damage increase especially when we start getting modifiers that increase damage vs vulnerability enemies. Vulnerability is a multiplier, so it’s a huge spike in damage mid to late.
• Flame Shield is our form of “Cleanse”, it allows us to skip out on control-impairing effects, and it also gives us a valuable boost of speed, I usually use it to break out of hard CCs or move out of ground effects that will CC me, it’s important to note here that Flame Shield also makes us “Immune”, it’s an incredibly powerful skill that gives us the ability to avoid getting one-shot.

Inferno is honestly my favourite ultimate, I use it in most builds as it really helps in grouping big packs of mobs into a neat pile.

It's only made better when using it in a Fire build, its passive "Supreme Inferno" puts the mana cost of Fireball to 0 during its duration, it's a great way to just let loose and spam out those Fireballs. Inferno also brings in reasonable damage itself and also counts as "burning damage".

There are a few ways we can tackle Mana on a Fireball build but most of them won't be solvable early, and depends a little on luck.

First, is the Aspect you'll see in most builds, Prodigy's Aspect, unfortunately, this won't completely solve the issues on Fireball as it does for other builds as Fireball does not have a reasonable way to recoup cost like Ice does with Avalanche, so we'll have to heavily rely on decent modifiers like Mana Reduction and Resource Generation.

That said, early on both our rings should likely be used with Resource Aspects, a notable one is Incendiary Aspect, I think it's actually worse after the change but every little helps early.

An alternative that is often overlooked is Aspect of the Umbral, although it does need a decent roll, it can still be used early with the base roll of "1", if we use the Enchantment, Frost Bolt, we apply crowd control to everything we hit with Fireball, and seeing as Fireball has a decent AoE, we'll gain at least one mana from every mob hit.

• Fire Bolt enchantment is here to take advantage of certain Glyphs and Passives, as well as item modifiers, Fireball doesn't naturally apply burn, so we need something here that produces burn to absorb the benefits we gain from foes that are burning.
• Teleport is here to improve mobility and increase stun capability when we have Raiment of the Infinite. There are a few other Enchantments we can use here as it's a relatively flexible slot.
• Fireball is a reasonable choice, as we've already levelled the skill, so it brings a lot of damage naturally when we pop a pack, it also runs quite well with the Heart, Barber.
• An alternative Enchantment for fixing mana issues if you have a well-rolled Aspect of the Umbral is Frost Bolt, which is why I kept it levelled, the Chill application from Frost Bolt will constantly proc Aspect of the Umbral for insane resource generation.

Fireball has a lot of unique specifically designed for it. It's able to make exclusive use of both Staff of the Endless Rage and Gloves of the Illuminator, both specifically designed to change how the Fireball Skill functions.

• Ring of Starless Sky could be a pretty decent choice here to quell some of the resource hungriness of the skill.
• Staff of Endless Rage This is an overall damage increase allowing us to cast 2 additional Fireballs on either side of our initial Fireball every 3rd cast, after it's buff these 2 extra Fireballs are a lot closer together, thus allowing them to hit packs much easier.
• Gloves of the Illuminator These were once again buffed, increasing the resource gained while also slightly decreasing how much our Fireballs damage was reduced by.

• Outdated Fireball - Umbral Variant

The Umbral variant of Fireball works by utilising Umbral as it's soul generator taking away the need for the Legendary Node from Static Surge as Prodigy alone won't cut it. This requires us to have a max-rolled Umbral, but what it essentially gives us is massively increased damage while sacrificing the Teleport Enchantment for Chill, so that we can take advantage of Chill Glyphs.