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    World of Warcraft Classic · Tier 1 · Onyxia's Lair

    Onyxia tactics

    A guide to all three Classic phases: establishing threat, handling Deep Breath and whelps in the air phase, and managing the landing and final fear phase.

    English40-player raid1 bossNerf history
    Updated
    Game version
    Classic · Tier 2

    Review the phases before the pull

    Onyxia's individual abilities are straightforward, but takeoff and landing are the most dangerous transitions. Read the summary first, then review positioning in each phase and your role's responsibilities.

    This guide is for the level 60 Classic version. The Wrath version and the Season of Mastery / Discovery changes are different encounters.

    One boss, three distinct phases

    Onyxia's Lair is a single boss 40-player raid. The first phase measures threat discipline and positioning, the flight phase measures whelp control and Deep Breath reaction, and the last phase measures the tank's fear control without the dragon turning on the raid.

    For raid lead: Mark the northern tank point, split the raid into east and west sides, name the whelp tanks and AoE groups and repeat the Deep Breath safe zones before the pull.

    Quick links

    Onyxia Vanilla change history

    Onyxia changed several times before patch 1.12. Some changes adjusted balance; others fixed bugs. Classic Era and Anniversary use the established level 60 version rather than the broken intermediate states of the original patches.

    TimeDocumented changeEffect
    Patch 1.3Removed Fireball’s confusion and damage-over-time effects while increasing its direct damage; Deep Breath now heated the egg pits; fixed combat resets during flight.The flight phase became more predictable, but the fireball's direct hit became harder.
    Hotfix 3/16/2005Fixed a bug that caused consecutive knockback spam.Prevented repeated unintended knockbacks from disrupting tank threat.
    Patch 1.5Tail Sweep's missing knockback restored.Standing behind Onyxia once again risked being knocked into the whelp caves.
    Hotfix 6/28/2005Onyxia's HP was increased to offset the bugfix that increased caster DPS.The change was a compensatory buff, not a nerf.
    Patch 1.7Point-to-point teleporting in the flight phase was removed and confuse evasion was fixed.Made flight movement clearer and removed the old confusion exploit.
    Hotfix 3/31/2006The accidental increase in Deep Breath frequency in patch 1.10 was reverted.It was a bug fix, not a planned nerf.

    In the Classic 1.12 guide, Deep Breath is treated as a random flight path selection; raid stacking or DPS speed won't reliably trigger it.

    Onyxia's Lair in chronological order

    Onyxia

    Onyxia

    Threat, the flight phase, Deep Breath, whelps and fear.
    Onyxia

    Encounter 1 / 1 · Onyxia's Lair

    Onyxia

    A three-phase black dragon encounter: ground, flight and a final fear phase.

    2 tanksFire resistanceWhelp control

    Contents

    1. Before pull 2. Tactic 3. Roles 4. Mechanics 5. Nerfs Back to boss list
    TL;DR: Tank Onyxia against the north wall and keep the raid at her sides, never in front of her or behind her tail. During the flight phase, spread out, gather whelps for AoE and move immediately to either side of Deep Breath's path. Stop DPS before she lands, let the tank rebuild threat and manage Bellowing Roar without allowing Onyxia to turn toward the raid.

    Raid priorities

    • The tank holds Onyxia's head to the north; the rest of the raid only stands at the sides and not at the mouth of the egg pit.
    • When the Deep Breath emote appears, react to Onyxia's position and move out of the straight path she will take across the room.
    • On landing, the DPS stops until the main tank has regained position and threat.
    • Only the tank uses fear immunity in a controlled manner; the rest of the raid doesn't pull Onyxia away from the fear group.
    Before the pull
    • Clear the entrance tunnel and enter together before the Warders respawn.
    • Mark the tank point on the north wall and the raid spots on the east and west sides.
    • Assign whelp tanks, AoE groups and a player to call Onyxia's position during flight.
    • Agree on the tank's Berserker Rage / Fear Ward timing for phase three.
    Mechanics reference
    Flame Breath and Cleave
    Heavy frontal attacks should hit only the tank while Onyxia remains facing north.
    Knock Away
    Tank knockback reduces threat; DPS must leave sufficient margin throughout the first phase.
    Tail Sweep
    The rear cone throws players to the sides and can push them into whelp eggs.
    Fireball
    The target in the flight phase and nearby players take Fire damage, so the raid spreads.
    Deep Breath
    Onyxia flies across the room, burning a wide, straight path. Move to either side of that path; standing at the room's edge alone does not guarantee safety.
    Onyxia Whelps
    A large wave rises at the beginning of the flight phase and smaller waves later; they get tanked and AoE killed.
    Bellowing Roar
    Phase 3 raid fear can turn the tank and the rest of the raid in different directions; floor cracks erupt with fear.
    Phase plan and tactic
    Phase 1 · 100–65%
    Main tank runs past Onyxia to the north wall. The raid splits to the flanks and waits for the threat. DPS is kept in check due to Knock Away; the front and back cones are left completely empty.
    Phase 2 · 65–40%
    Onyxia takes off from the south. Off-tanks gather the first whelp wave for controlled AoE. Ranged players attack Onyxia while spread out, and everyone moves out of her flight path when the Deep Breath emote appears.
    Landing
    Casters stop damage well before 40 percent. The main tank builds rage from the whelps, fetches Onyxia to the north and only then calls the DPS to continue.
    Phase 3 · 40–0%
    Return to the flank positions used in phase one. The tank watches for the screen shake before fear and uses the agreed fear immunity. The rest of the raid follows the fear plan instead of breaking it at random. Avoid floor eruptions and kill remaining whelps.
    Role notes

    Tanks

    • The main tank keeps Onyxia's head pointing north and builds a strong threat lead.
    • Off-tanks collect whelps during flight; on landing, a second tank helps keep Onyxia facing the correct direction.

    Melee DPS

    • Stand on the side between the front foot and the back foot, not in line with the head or tail.
    • Help kill whelps during the flight phase and wait for the tank's call before attacking after landing.

    Ranged DPS

    • Spread out to avoid sharing Fireball splash damage and track Onyxia's position in the air.
    • Use DoT and ranged damage during the flight phase, but stop in time before landing.

    Healers

    • Stay with the flank groups and assign dedicated healers to the whelp tanks.
    • Prepare for brief interruptions to tank healing during fear and sudden Fireball damage during flight.

    Raid utility

    • Hunters can use Track Dragonkin to help call Onyxia's position during flight.
    • Warrior tanks time Berserker Rage. Coordinate Fear Ward and Tremor Totem so an unintended player is not left as the only unfearable target.

    Nerfs: what changed

    • Patch 1.3 brought the clearest before-and-after changes: Fireball lost its confusion and damage-over-time effects but gained direct damage, while flight-phase combat and egg-pit interactions were fixed.
    • Patch 1.5 restored Tail Sweep's knockback; the safe place is therefore not directly behind the tail.
    • Patch 1.7 removed point-to-point teleports during flight and closed a confusion exploit.
    • Patch 1.10's Deep Breath spam was an unintentional bug and was hotfixed; it is not treated as a more difficult official version.
    • Season of Mastery's flight-phase drakes and Warders, and Season of Discovery's level 60 changes, are not covered.
    Patch 1.3Patch 1.5Patch 1.71.10 hotfix

    Sources and versioning

    Anniversary availability and the removal of buff/debuff limits are based on Blizzard’s announcement. Level 60 mechanics and original patch and hotfix history were checked against Warcraft Wiki’s Classic encounter documentation.

    1. Blizzard — 20th Anniversary: Molten Core and Onyxia's Lair now live
      worldofwarcraft.blizzard.com
    2. Warcraft Wiki — Onyxia (Classic)
      warcraft.wiki.gg/wiki/Onyxia_(Classic)
    3. Warcraft Wiki — Patch 1.3.0
      warcraft.wiki.gg/wiki/Patch_1.3.0
    4. Warcraft Wiki — Patch 1.5.0
      warcraft.wiki.gg/wiki/Patch_1.5.0
    5. Warcraft Wiki — Patch 1.7.0
      warcraft.wiki.gg/wiki/Patch_1.7.0
    6. Warcraft Wiki — Patch 1.10.0
      warcraft.wiki.gg/wiki/Patch_1.10.0

    The level 80 Onyxia encounter from Wrath of the Lich King is not covered. Updated 18 August 2026.

    WoW Anniversary