Core requirements
The advanced setup is A, and the budget setup is B.
- Cast rate
- A 100% ≥ 99% · B 110%
- Immunities
- A Sunder + reduced enemy fire resistance
- B Principle
- Avoid fire/physical dual immunes
- Resistances
- Recheck after equipping a Sunder Charm
Attributes
Total attributes with equipment · hard points shown separately
| Strength | A·B 156Total · meet requirements on both main and swap |
|---|---|
| Dexterity | A Total 35 · B DefaultEquipment requirements only · no maximum block |
| Vitality | All remaining pointsAfter meeting Strength and Dexterity requirements |
| Energy | 0 hard pointsMana potions and Insight |
Attribute calculations and equipment changes
Strength
Do not rely on an item's own Strength to equip it initially, and meet requirements on swap too. Invest only the shortfall after accounting for Enigma and confirmed charm bonuses. Meet 91 Strength before equipping Sandstorm Trek without its own bonus; likewise, meet 65 before equipping Jalal's Mane without its own +20 Strength.
Dexterity
Do not spend additional points to reach 75% shield block. A's Flail requires 35 Dexterity; B's Crystal Sword has no Dexterity requirement. Recheck weapon requirements when changing equipment.
Vitality
Fight behind your mercenary and summons, investing remaining attributes in life. B follows the same principle.
Energy
Use mana potions and Mana after each Kill early on. After switching to A without Insight, keep carrying mana potions. Spell damage cannot steal mana.
Skills
Level 90 · 101 hard points
Main skills and synergies
Supporting investment
Prerequisite · support 1 point each
Includes 12 quest points; equipment skill bonuses are excluded. Unlisted skills have 0 points. A and B use the same allocation.
Investment order
Firestorm until level 12, then learn 
Fissure and prioritize it. At level 30, unlock 
Armageddon and Summon Grizzly with 1 point each; maintain 
Oak Sage 1 points.
- Fissure 20
- Firestorm 20
Volcano 20- Armageddon 20
Molten Boulder 16 in that order. Keep the separate 5 summoning points, including wolf and bear prerequisites.
At levels 91–94, invest in Molten Boulder 20; at levels 95–99, Oak Sage to 6 hard points.
Equipment skill bonuses and allocation notes
The table and image show 101 hard points. Equipment +skills are added separately and do not replace hard points for ordinary synergies.
A and B use the same base allocation. Changing equipment alone does not change the tree.
A·B Shared · Level 90 complete allocation
Open this allocation in the simulator ↗
Equipment
A / B: compare modifiers and replacement requirements.
| Slot | Advanced A | Budget B | Conditions |
|---|---|---|---|
| Weapon | A Runeword Heart of the Oak | B Runeword Spirit | B provides damage and enemy resistance reduction; make up resistances with the amulet and charms |
Weapon choice and replacement detailsA · Setup requirementsFlail with 4 sockets +3 to All Skills · 40% Faster Cast Rate · 30–40 all resistances B · Setup requirementsCrystal Sword with 4 sockets +2 to All Skills · at least 25% Faster Cast Rate | |||
| Shield | ARuneword Phoenix | BRuneword Spirit | A loses Spirit's FCR, so obtain 20% from two rings |
Shield choice and replacement detailsA · Setup requirementsMonarch with 4 sockets -28% Enemy Fire Resistance · Redemption B · Setup requirementsMonarch with 4 sockets At least 25% FCR · +2 Skills | |||
| Helm | A Runeword Flickering Flame | BRuneword Lore | A Resist Fire aura offsets your Sunder Charm penalty · selected base requires 30 Strength |
Helm choice and replacement detailsA · Setup requirements3-socket Spirit Mask · Fissure/Volcano bonuses are optional extras +3 Fire Skills · -10–15% Enemy Fire Resistance B · Setup requirementsCap with 2 sockets +1 to All Skills · lightning resistance | |||
| Armor | A Runeword Enigma | B Skin of the Vipermagi | B travels on foot · replace the lost 30% Faster Cast Rate before switching to Enigma |
Armor choice and replacement detailsA · Setup requirementsMage Plate with 3 sockets Teleport · +2 to All Skills · Strength per level B · Setup requirements30% Faster Cast Rate · 20–35 all resistances | |||
| Gloves | A Magefist | BMagefist | Maintain the shared cast rate |
Glove choice and replacement detailsA · Setup requirements20% Faster Cast Rate · casting support B · Setup requirements20% Faster Cast Rate | |||
| Belt | A Arachnid Mesh | B Nightsmoke | B obtains 20% Faster Cast Rate from armor |
Belt choice and replacement detailsA · Setup requirements20% Faster Cast Rate · +1 to All Skills B · Setup requirements10 all resistances · mana | |||
| Boots | A Sandstorm Trek | B Aldur's Advance | B strengthens fire resistance · A needs fire resistance charms |
Boot choice and replacement detailsA · Setup requirements20% Faster Hit Recovery · 40–70 poison resistance B · Setup requirements40–50 fire resistance · 40% Faster Run/Walk | |||
| Amulet | A Mara's Kaleidoscope | BRare Druid amulet | B prioritizes missing fire/lightning resistance over skills |
Amulet choice and replacement detailsA · Setup requirements+2 to All Skills · 20–30 all resistances | |||
| Ring 1 | ARare caster ring | BRare caster ring | A·B 10% Faster Cast Rate required |
| Ring 2 | ARare caster ring | BRare resistance ring | A Two rings provide 20%: 40+20+20+20=100% |
Mercenary and weapon swap
| Slot | Advanced A | Budget B | Conditions |
|---|---|---|---|
| Mercenary | A Act 2 Might  Runeword InfinityRuneword Fortitude Andariel's Visage(Ral) | B Act 2 Prayer Runeword InsightRuneword Treachery Tal Rasha's Horadric Crest | Maintain aura range and mercenary survival |
Mercenary detailsDeveloping an Insight mercenaryUpgrade the Insight mercenary to an ethereal elite polearm to improve first-kill damage. Use Ral in Andariel's Visage to offset its -30 fire resistance; Tal Rasha's Horadric Crest can be equipped from level 66. A: when switching to another weapon, prioritize retaining its aura or enemy resistance reduction. | |||
| Weapon swap | A Runeword Call to ArmsCrystal SwordRuneword SpiritMonarch | B Staff with Teleport charges | A Battle Command → Battle Orders; B is for escaping dangerous areas |
Swap detailsCharge managementMonitor Teleport charges and repair gold. You lose shield resistances while holding the staff, so do not land in the middle of enemies. | |||
Upgrade order
- Secure mana and FCR with Spirit, Insight and Magefist
- Add the Sunder Charm after Flickering Flame and sufficient fire resistance
- Obtain Heart of the Oak, Arachnid Mesh and two FCR rings
- Add Enigma and Phoenix while maintaining 99% FCR
- Add an Infinity mercenary, Call to Arms and Elemental charms
Playstyle
- Preparing to farm
Summon the sage, wolves and bear, then activate Armageddon. A checks the mercenary's Conviction and your own fire resistance.
- Ordinary packs
Place Fissure along enemies' path and Volcano beneath stationary targets. Cast Firestorm between them and layer Armageddon when close.
- Bosses
Let the bear hold the boss and repeat Volcano beneath it, Fissure, then Firestorm at close range. Do not just activate Armageddon and wait.
- Handling immunes
A uses Renewed Flame Rift together with the helm, Phoenix and Infinity. B uses the physical components of Volcano and Armageddon plus the mercenary against fire-only immunes. Bypass slow dual immunes.
- B Farming areas
Start in areas with few fire immunes, such as Nightmare Cows and the Hell Stony Tomb. Exclude the fire-immune-heavy Chaos Sanctuary from primary farming until A gear is ready.
- Transition requirements
You can level with this skill family from level 12, when Fissure unlocks. Equip the Sunder Charm only after obtaining enemy fire resistance reduction and sufficient personal resistance.
Mechanics and notes
Why alternate skills
Since 2.4, delayed fire spells do not share their cooldowns. After placing Fissure, use Volcano and Firestorm to fill the waiting time with attacks.
Resistance after immunity
Sunder lowers fire immunity to 95% resistance; enemy fire resistance reduction on gear is still needed. Infinity's Conviction applies at 1/5 effectiveness to sundered immunes. The Infinity weapon's enemy lightning resistance modifier does not affect your fire spells.
Why retain physical damage
Volcano and Armageddon also deal physical damage. Reduced enemy fire resistance does not increase this portion, but it gives B another way to handle fire-only immunes.
Strengths, limitations and farming style
Strengths
Fissure clears moving packs over a wide area.
Physical components and summons help with early immunity handling.
Limitations
A is expensive with Phoenix, Infinity and Enigma.
Several spells, summons and resistances require simultaneous management.
Additional variants
Ravenlore
Replace Flickering Flame with Ravenlore only after charms and gear supply enough fire resistance. Losing the Resist Fire aura requires recalculating the Sunder Charm penalty. Keep the skills.
Fissure-focused allocation
If you use Fissure more often than Armageddon, respec and move 4 points from Armageddon to raise Molten Boulder to 20. This differs from the base image's Armageddon 20 and Molten Boulder 16.