Raid guide to Onyxia's Lair in WoW: Forever: tactics for tanks, healers and DPS

Onyxia opens on 9 December 2026 and is the only Classic raid among the three that unlock that day: one boss, 40 players, three phases. Each phase is simple on its own, and they still manage to fall apart together. Instance data and the full quest chain are on the Onyxia's Lair instance page.

Getting there and access

The lair is in the Wyrmbog in southern Dustwallow Marsh, through a cave in the cliff face. The dragonkin patrolling outside are no threat at 60, but don't pull them with half a raid.

Nobody gets in without the Drakefire Amulet in their bags. The chain is long and different for each faction:

• Alliance (16 quests, from level 48): it starts with "Dragonkin Menace" in the Burning Steppes, goes through "Jail Break!" in Blackrock Depths and builds up to "The Great Masquerade" in Stormwind. At the end you take the Blood of the Black Dragon Champion from General Drakkisath.
• Horde (14 quests, from level 55): the chain runs through Kargath and Orgrimmar, where the order to kill Rend Blackhand also waits, to Rexxar in Desolace. Then come Black Dragonspawn Eyes from Upper Blackrock Spire, Emberstrife in the Wyrmbog and the four Tests of Skulls, ending with Drakkisath's blood as well.

So both routes go through Upper Blackrock Spire. Plan the attunement alongside the Upper Blackrock Spire guide; the instance page lists every quest in order.

Preparation

Onyxia does almost nothing but fire damage. Anything that cuts fire damage helps the whole raid and the tanks most of all: fire resistance gear, Fire Protection Potions, the matching auras and totems. Plus the usual: repair, consumables for a long night, enough reagents for rezzes.

The phase 3 fear needs a plan. Decide beforehand who covers it: priests with Fear Ward, shamans with Tremor Totem, warriors with Berserker Rage. Without that, the raid scatters across the lava cracks.

Raid setup

What works: one main tank, two or three more tanks for the whelps and roughly a quarter of the raid on healing. Everyone else is DPS, with plenty of ranged, because in phase 2 Onyxia can only be hit from range. AoE is gold, since the whelps come in big packs.

Assign spots before the pull:

• Melee on Onyxia's flanks, never in front or behind.
• Ranged and healers in two groups, one on each side of the room.
• Whelp tanks one at each of the two cave mouths the whelps pour out of.

Lay out every spot in the raid comp planner and put the date and sign-ups in the raid planner.

Phase 1: on the ground

Onyxia lies at the far end of the room. The main tank pulls her and turns her head to the wall so the raid stands at her sides. In Classic she lifts off at 65% and lands again at 40%. Whether Forever moved those thresholds won't be known until the first kill, so call phases off her health bar, not the clock.

Her ground abilities:

• Flame Breath hits everything in front of her.
• Cleave hits the tank and anyone next to them.
• Tail Sweep knocks everyone behind her flying, often straight into the whelp caves.
• Wing Buffet knocks back whoever is in front.

• Tank: Keep her still against the wall. Every turn swings breath or tail into the raid.
• Healers: The tank takes the bulk of the damage. Focus there, but keep an eye out for anyone standing in the wrong spot.
• DPS: Give the tank a few seconds to build threat. Melee on the flanks, ranged off to the sides with some distance.

Phase 2: in the air

Onyxia circles over the middle of the room and attacks from above. This is the phase that decides the night.

• Fireballs on random players also hit anyone close by. Spread out.
• Deep Breath: an emote warns you, she draws breath and then torches a lane straight across the room. Anyone in it is almost always dead. Move sideways at once, out of the line between her and the opposite wall.
• Whelps pour out of the two side caves in waves.

• Tank: The whelp tanks pick up each wave at the cave mouths and keep them stacked. Don't run into the caves, there are more inside. If bigger guards show up among the whelps, each one gets its own tank.
• Healers: Stay spread so one fireball never hits two healers. Top people up quickly after each hit, but never by walking into the breath lane.
• DPS: Ranged stay on Onyxia. Melee and AoE classes clean up whelps at the tanks. Hesitating on Deep Breath is what usually costs the attempt.

Phase 3: the landing

She lands again at around 40%. Everything from phase 1 comes back, plus Bellowing Roar: the whole raid runs in fear, and while it lasts, fire bursts out of the cracks in the floor.

• Tank: Grab her the moment she lands and turn her back to the wall. With Berserker Rage or Fear Ward you stay put through the roar.
• Healers: Fear Ward on the tank comes first. Every roar needs a round of raid healing afterwards.
• DPS: Hold damage until the tank has her locked down. A Tremor Totem in every group takes a lot of pressure off. Leftover whelps are still the AoE classes' job.

Phase 3 is an endurance test. The fewer people died in phase 2, the more comfortable it gets.

Trash

There's barely any trash in the lair. A few black dragonspawn guards stand at the entrance; pull them one pack at a time. After that the path to Onyxia is clear. Leave the whelps in the side caves alone until the fight starts.

Loot

The Head of Onyxia drops, a quest item the raid turns in at its capital for a reward. Onyxia's full loot table in Forever won't be certain until the raid opens, and it goes up on the instance page then.

With 40 people, settle loot rules (DKP or loot council) before the first pull, not while the corpse is still warm.