Leveling
regex for vendor: "y: r|\d+% i.+mov|^\+.*all sp.*ls$|^\+.*re sp.*ls$|s: (st|cr)"
level 1-14
Pick up explosive grenade from Renly and frost bomb.
1. Support gem = Multishot on explosive grenades
2. Support gem = Elemental armament I
3. Support gem = Multishot on rapid shots, later put it onto gas grenade
Grab one intelligence attribute note and add pounce with a talisman in offhand for mobility
Level 14 add Gas grenade with multishot and elemental armament
For clearing use flash grenade against squishy enemies and explosive grenade against tanky enemies.
For bossing combo is: Frost bomb -> Gas grenade -> Explosive grenade -> Gas grenade -> Explosive grenade
Upgrade Explosive grenades > Gas grenade > all other
Once you obtain Support gem II, replace all Multishot I with Multishot II and Elemental armament I with Elemental armament II
If you do not have enough intelligence for frost bomb, you can use oil grenade for exposure.
Upgrading weapon:
Look for Tense Crossbow level 5 and Sturdy Crossbow Level 10 at vendor, if you do not drop one. Flat damage is king.
Recommend upgrading at level 16 to varnished crossbow and level 33 to bombard crossbow
Make sure to check the vendor for fire staves and craft on any good firestaves starting from lvl 36. Save GOLD for respec later.
Keep using grenades until 52, where you swap to Flameblast with Oil grenade. Make sure you have at least 25k Gold before respecing.
Flameblast swap
IMPORTANT
DO NOT GET ADDED FIRE DAMAGE ANYWHERE!
If you have any added fire damage to attacks or extra fire damage your Oil Grenade will ignite the enemy and overwrite your flameblast ignite. You will notice it, when your ignites do not deal any damage all of a sudden. Check tooltip of oil grenade.
SET weapon sets for skills. Select weapon set I for crossbow/oil grenade and Flameblast for weapon set II. YOU CAN CAST FLAMEBLAST WITH CROSSBOW IN WEAPON SET 1, negating all your dps.
Advanced Thaumaturgy (ascendancy) is mandatory before swap. GEM quality is really important on flameblast. Get it to 20% as soon as possible.
Against flying units cast tornado.
Before respecing make sure you have:
-At least 30k gold
-Uncut skill gem level 13
-Lesser or greater jewellers orb
-At least 2 gemcutter, preferably 4 for flameblast
-Decent fire staff (+3/+4 to all fire spells)
Level of skill gems and order of quality upgrades
Flameblast, 10% quality is must
Oil Grenade, gives larger AOE. You want to level your oil grenade, because you can get more area of effect on specific levels: 10, 13, 16, 19, 22, 25
If you are running cast on dodge, that is also important for mobility. Can use Surefooted sigil for more dodge range.
Frostbomb and elemental weakness: if they are not high enough, they cannot apply to enemies. Make sure to level them!
Level 90+ Split Personality Swap
Split personality can be obtained from The Raven Trickster (delirium). This allows allocating nodes from the starting location of the sorcerer. I recommend swapping once you have good energy shield based gear. 900+ energy shield chest is needed.
The swap will allow you to get tankier and obtain Chaos Inoculation, becoming immune against chaos damage. The jewel is going to be very expensive on leaguestart.
Ascendancy Order
Essence of Virtue
Advanced Thaumaturgy
Neurological Implants
Studded, MAKE SURE you have the same amount of support gems in every color. You can use Shards or Basic Bolt to balance out your supports.
Gearing and Stats
These stats will give this amount of damage:
+1 level of skills/fire skills = 16% more ignite dps
10% damage as extra fire = 8% more ignite dps
10% increased damage/spell damage/fire damage/elemental damage = 2% more ignite dps
In general spell/fire skill level > as extra fire > spell damage/fire damage
Armour pieces and rings should be resistance and life. Amulet +skills is best. Boots movespeed.
Jewels:
Increased magnitude of ailments you inflict, ingite magnitude and damaging ailments inflict damage faster are the same at max roll ~ 4.5% more damage
Spell damage/fire damage at max roll is okay ~ 3% more damage
Mapping
Ignited ground is fine
Mana issues: Get laviangas or lower your oil grenade level. Make sure you have at least 2% mana on kill
You can link Cooldown Recovery II, Projectile Acceleration III or Efficiency II into oil grenade depending on needs. I personally like Pierce III the most for endgame.
Maps to avoid
Sun temple
Lofty summit
These maps have bosses with 90% fire res. If you cannot apply elemental weakness and exposure on them, avoid those.
Uniques:
If you run Fireflower unique amulet, you need recover LIFE on kill on a jewel! If you want, you can snapshot the ignite with oil grenade with the amulet and swap it off afterwards.
You can also run a Kaoms for higher max hit/tankiness before going full ES
You can use Surefooted Sigil for more mobility
Rite of passage
Wolf, cat or Stag are all fine for faster clear
Bear is very good for tankiness
What to farm:
Any stationary content like expedition and ritual is good, but the build should be able to do all content.
Lootfilter includes leveling and highlights crossbows and staves:
https://www.filterblade.xyz/?profile=ll566847&saveState=ZXZX0SY02BVTD9&isPreset=false&game=Poe2
For mapping use neversink filterblade and adjust strictness yourself.