PATCH NOTES / NA

October 20 PDT / 21 CEST · North America

NA adds Krao Cave and Draupnir Hard mode, the Ariel Daevanion Board, Sorcerer conditional-damage fixes, and Abyss capacity/boss durability changes. No new skill coefficients or cooldown values are published.

Summary reviewedSource updated: 2026-10-21 06:30 UTC
NC · Official source ↗

Reviewed class changes and selected system highlights. Read the official notice for the full event rewards and product tables. Class labels describe announced changes. Combat-impact notes explain likely effects; they are not measured total DPS percentages. ↑ buff + ↓ nerf within one class = ↔ adjustment.

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At a glance · class impact

Sorcerer
CLASS CHANGES

Sorcerer Bug fix

Bug fix 4

Class guide →
  • Bug fix

    Cold Storm · stacked Frostbite bonus

    Restores extra damage that failed to trigger when attacking a target with stacked Frostbite.

    Combat impact Analysis: restores missing conditional damage. NC provides no coefficient or total-DPS percentage; stack count, tooltip level and rotation reproduction remain pending.

  • Bug fix

    Cold Storm · Frostbite level matching

    Fixes the Frostbite effect not matching Cold Storm's skill level.

    Combat impact Analysis: level/effect consistency fix. The notice gives no affected before/after level values, so skill inputs are not inferred.

  • Bug fix

    Cold Storm · Specialty 1 reapplication

    Removes an additional Frostbite application that occurred inside the Cold Storm area after the effect ended when Specialty 1 was selected.

    Combat impact Analysis: removes an unintended conditional reapplication; do not convert it into an arbitrary damage reduction.

  • Bug fix

    Fire Wall · targets without Embers

    Removes extra damage that was incorrectly dealt to targets not affected by Embers.

    Combat impact Analysis: removes unintended damage when the required condition is absent. No coefficient or measured DPS adjustment is published.

Chanter
CLASS CHANGES

Chanter Bug fix

Bug fix 1

Class guide →
  • Bug fix

    Spinning Strike · effect display

    Fixes skill effects not displaying correctly. NC does not state that damage, cooldown or duration values change.

    Combat impact Analysis: treat this as a display/effect reliability fix until NA client reproduction confirms a mechanical difference; no DPS multiplier is assigned.

PATCH HIGHLIGHTS

Other patch highlights

Region, announcement and effective window

  • Published October 21 at 06:30 UTC and revised at 06:30:11 UTC for the North American service. The title identifies October 20 PDT / October 21 CEST, and the event begins October 21; the separate maintenance notice had not yet been marked complete when reviewed.
  • NA-only: these fixes and systems now have their own regional source. KR values, dates and the KR-only Arcana issue are not copied into NA inputs.

Krao Cave and Draupnir Hard mode

  • Hard mode is added to Krao Cave and Draupnir. Entry requires item level 2600, Frenzy starts at 4 minutes, and each player has up to 3 revives. This is a new difficulty, not confirmation that the existing KR Conquest animations match NA Hard mode.
  • P1 guide targets: /dungeons/krao-cave/, /dungeons/draupnir/ and their /ko/ counterparts, plus /guides/dungeon-rewards/ and progression.py. Verify NA difficulty labels, entry gate, Frenzy trigger, per-player revive counting, boss patterns and reward eligibility before changing the existing guides.

Hard-mode rewards and Ariel board

  • Hard mode adds Philosopher's Stone: Revelation (chance and guaranteed selection), dungeon-specific Ariel Fragments, hero artwork, more Kina than Normal, Unique materials and achievement skins. NC does not publish drop rates or exact Kina amounts.
  • Substance Morph converts 100 Ariel Fragments into one Daevanion Crystal: Ariel up to 30 times per character, or 1 fragment into 5 Enhance Stones without a stated limit. Ariel board points come from fragments collected in Hard mode and morphed; the morphable amount is limited per dungeon, but the per-dungeon values are not listed.
  • P1 guide targets: /endgame/, /guides/dungeon-rewards/, growthvisuals.py and progression.py. Verify the board unlock, actual morph menu, per-dungeon caps, reward claims and prerequisites in the NA client; no unannounced cost or drop chance is inferred.

Abyss and system adjustments

  • Abyss capacity increases, Lower Abyss Dimensional Core HP increases, all Abyss boss HP increases, and Kaira/Argo collision hitboxes become slightly larger. NC gives no player cap, HP or hitbox before/after values, and announces no new boss pattern or reward table.
  • Analysis: larger HP pools can lengthen fights, while larger collision may change contact/targeting feel; measured difficulty and strategy impact remain unverified. Market restrictions for gathered materials are relaxed for some previously restricted accounts but remain for others.

Map, settings and review limits

  • Verteron Empyrean Traces blocked by Halloween decorations at Dawn Legion Base and Zumion Village move to accessible locations. P1 target: /maps/, /ko/maps/ and data/maps.json. Keep current coordinates until the exact NA in-game coordinates, altitude, spawn/acquisition condition and completion state are verified.
  • Also fixes duplicate Movement Controls entries and a mismatch between an unnamed title's actual and tooltip effects. The exact title and before/after effect are not provided, so no stat input changes are made.
  • Skill review targets: /skills/spinning-strike/, /skills/cold-storm/, /skills/fire-wall/ and Korean counterparts, with source-bound records in data/patch-reviews.json and data/news.json. Validate tooltip level/specialty, stacked-condition timing, expiration/reapplication and rotation under NA conditions. data/skills.json, data/skill-snapshot.json and historical DPS remain unchanged because the source provides no coefficients, cooldowns or level values.
  • This is a highlights review of classes and major systems, not a complete republication of the event/product tables. No in-game validation or final class tier is claimed.

Class artwork © NC · official AION 2 teaser. Korea-only class terms and tables are not applied to North America. NC ↗