Conversion Up
Index: 70-90 dmg, +12/lvl, max 20 (ladder 10)
Skill upgrade from Conversion. 100% weapon damage, No CB/OW. Delay after patch June 30: 4s.
Pool Tier 2/Sigil is exclusive to S25, only includes 5 finalized skills and is separated from the Skill Upgrade list by class.
Orb Point (from Orb Upgrade C2): each 10 Orb Points reduce 10% delay of skills, minimum delay 0.5 seconds. Applies to both Tier 1 confused Tier 2.
Updated June 30: Conversion/Vengeance also 4s; Omega Throw/Wind Vortex/WW Up also 5s; Meteor/Blizzard also 6s.
The list below is the Skill Upgrade Tier 1 pool inherited from table S24.2 and divided by class. New/extra skills that are not directly tied to the skill class will be segregated into the Tier 2 pool.
5 Upgrade skills inherited from list S24.2.
Index: 70-90 dmg, +12/lvl, max 20 (ladder 10)
Skill upgrade from Conversion. 100% weapon damage, No CB/OW. Delay after patch June 30: 4s.
Index: 1-1990 dmg, +149/lvl, max 20 (ladder 10)
Skill upgrade from Vengeance, cold damage according to table S25. Delay after patch June 30: 4s.
Index: 200-200 dmg, +30/lvl, max 20 (ladder 10)
Skill upgrade from Smite. 100% weapon damage, No CB/OW.
Index: 1650-1788 dmg, +250/lvl, max 20 (ladder 10)
Skill upgrade from Blessed Hammer, magic damage according to table S25.
Index: 106-121 dmg, +16/lvl, max 20 (ladder 10)
Mapping the name from the table: Warth of Thunder up. Used as FoH/Wrath lightning upgrade.
4 Upgrade skills inherited from list S24.2.
Index: 200-300 dmg, +38/lvl, max 20 (ladder 10)
Skill upgrade Barbarian according to table S25. 100% weapon damage, No CB/OW.
Index: 20-50 dmg, +5/lvl, max 20 (ladder 10)
Mapping from Double Throw style upgrade. 100% weapon damage, No CB/OW. Delay after patch June 30: 5s.
Index: 50-100 dmg, +12/lvl, max 20 (ladder 10)
Mapping from Frenzy style upgrade. 100% weapon damage, No CB/OW. Delay after patch June 30: 5s.
Index: 200-300 dmg, +38/lvl, max 20 (ladder 10)
Skill upgrade from Whirlwind. 100% weapon damage, No CB/OW. Delay after patch June 30: 5s.
7 Upgrade skills inherited from list S24.2.
Index: 1316-1494 dmg, +210/lvl, max 20 (ladder 10)
Mapping from Fireball Up, fire damage according to table S25.
Index: 600-676 dmg, +90/lvl, max 20 (ladder 10)
Meteor upgrade, fire damage according to table S25. Meteor delay after patch June 30: 6s.
Index: 190-1500 dmg, +126/lvl, max 20 (ladder 10)
Mapping from Lightning Up/Tempest Sorceress.
Index: 798-906 dmg, +120/lvl, max 20 (ladder 10)
Mapping from Glacial Spike/Frozen sphere style upgrade.
Index: 570-619 dmg, +90/lvl, max 20 (ladder 10)
Blizzard upgrade, cold damage according to table S25. Blizzard delay after June 30 patch: 6s.
Index: 190-1000 dmg, +89/lvl, max 20 (ladder 10)
Nova lightning upgrade according to table S25.
Index: 1-955 dmg, +100/lvl, max 20 (ladder 10)
Lightning upgrade according to table S25.
6 Upgrade skills inherited from list S24.2.
Index: 3427-3537 dmg, +1045/lvl, max 20 (ladder 10)
Freezing Arrow upgrade. 100% weapon damage, No CB/OW.
Index: 2457-2790 dmg, +787/lvl, max 20 (ladder 10)
Exploding Arrow upgrade. 100% weapon damage, No CB/OW.
Index: 50-150 dmg, +15/lvl, max 20 (ladder 10)
Amazon physical upgrade according to table S25. 100% weapon damage, No CB/OW.
Index: 50-150 dmg, +15/lvl, max 20 (ladder 10)
Guided Arrow upgrade. 100% weapon damage, No CB/OW.
Index: 50-150 dmg, +15/lvl, max 20 (ladder 10)
Mapping from Strafe/Barrage style upgrade. 100% weapon damage, No CB/OW.
Index: 1576-1576 dmg, +473/lvl, max 20 (ladder 10)
Fury upgrade. 100% weapon damage, No CB/OW.
3 Upgrade skills inherited from list S24.2.
Index: 874-944 dmg, +136/lvl, max 20 (ladder 10)
Tornado upgrade. 100% weapon damage, No CB/OW.
Index: 11595-12469 dmg, +6200/lvl, max 20 (ladder 10)
Fire Claws upgrade, fire damage according to table S25.
Index: 7735-7820 dmg, +2332/lvl, max 20 (ladder 10)
Mapping from Volcano/Conflagration fire upgrade.
3 Upgrade skills inherited from list S24.2.
Index: 100-100 dmg, +15/lvl, max 20 (ladder 10)
Blade Fury upgrade. 100% weapon damage, No CB/OW.
Index: 1000-1400 dmg, +180/lvl, max 20 (ladder 10)
Mapping from Dragon Claw/Cascade projectile upgrade. 100% weapon damage, No CB/OW.
Index: 400-700 dmg, +82/lvl, max 20 (ladder 10)
Dragon Talon upgrade. 100% weapon damage, No CB/OW.
3 Upgrade skills inherited from list S24.2.
Index: 1700-2800 dmg, +338/lvl, max 20 (ladder 10)
Bone Spear upgrade, magic damage according to table S25.
Index: 6200-6200 dmg, +930/lvl, max 20 (ladder 10)
Poison Dagger upgrade, poison damage according to table S25.
Index: 4681-5079 dmg, +732/lvl, max 20 (ladder 10)
Bone Spirit upgrade, magic damage according to table S25.
This Tier 2 skill group applies across Sigil by private pool. Once the correct conditions have been opened, the skill begins Lv1 and players use it Sigil Essence combined with Ngluu boss to gradually increase Lv20. This is a separate Sigil pool, not a list of plus levels directly in the Tier 1 class tab.
Combine the three elements of fire, ice, and lightning into a destructive spiral.
Tier 2 uses its own compounding formula: Sigil Essence + Nglo boss combination. Sigil Essence is a Tier 2 upgrade material, max stack 50; Sigil roll skills are still open source skills in the pool. The combined boss ingredients include: Frozen Crest, Fel Smolder, Lightning Spark and Spectral Remnant according to each level.
The total to reach Lv20 is 334 Sigil Essence combined with boss materials through the milestones: Frozen Crest (Lv2-Lv5), Fel Smoulder (Lv6-Lv10), Lightning Spark (Lv11-Lv15) and Spectral Remnant (Lv16-Lv20).
Skill Upgrade Tier 2 Season 25 is D2TM's own Sigil skill pool lookup page. Unlike Tier 1, which is equal to points in Group T, Tier 2 does not use Skill Upgrade points; Open skill at Lv1 and upgrade with Sigil Essence combined with boss materials at each milestone up to Lv20.
Pool Tier 2 currently only includes 5 skills: Elemental Spiral, Frostfall, Static Swarm, Magic Swirl and Lightning Grid. This is a separate list from Tier 1 Skill Upgrades by class to avoid duplication and easily balance the Season 25 meta.
Tier 2 is designed in a direction Sigil Skill Upgrade, apply skill roll mechanism in private pool then use Sigil Essence and Boss Materials to level up. This helps Tier 2 act as an endgame expansion branch, without confusing the linear point table of Tier 1 and without creating the feeling that players have to upgrade multiple systems with the same type of points.
The character needs to have Skill Upgrade Tier 1 with the same system Lv10 before unlocking Tier 2. When unlocked, Tier 2 begins Lv1 and can lift max Lv20. Each character is only allowed to lift 1 Skill Upgrade Tier 2, so choosing Sigil needs to match the character's build direction, damage element, farming speed and PvE/PvP goals.
Tier 2 Sigil is the branch for the main character. Merc Use Signet Skill Up exclusively on C2 weapons and do not use Tier 1 points. This page clearly separates 3 important keyword groups: Skill Upgrade Tier 2, Sigil Skill Upgrade and Merc Signet Skill Up.
This page targets search terms such as Skill Upgrade Tier 2 S25, Sigil Skill Upgrade D2TM, Elemental Spiral D2TM, Frostfall Skill Upgrade, Static Swarm Season 25, Magic Swirl Diablo II Vietnam, Lightning Grid Skill Upgrade, Merc Signet Skill Up and D2TM endgame build.
Are not. Tier 2 uses Sigil to get skills, then uses Sigil Essence to combine boss ingredients according to its own recipe to raise from Lv1 to Lv20.
Pool Tier 2 currently has 5 skills: Elemental Spiral, Frostfall, Static Swarm, Magic Swirl and Lightning Grid.
Merc uses Signet Skill Up exclusively on C2 weapons, separate from the main character's Tier 2 Sigil mechanism.