Onyxia's Lair — Epog Strategy

Onyxia's Lair is currently the only end-game raid available on Epog, which makes it the single most-parsed encounter in the entire log database. The good news is the fight has barely changed across two decades of WoW expansions — if you've raided Ony in Vanilla, TBC, Wrath, or any private-server iteration, the broad strokes will feel familiar. The mechanical specifics still catch out new groups, though, and the parse ceiling on a clean attempt can be surprisingly high. This guide walks through the three phases, what each role does, and what to look for in your combat log when you're trying to improve.

The fight at a glance

Onyxia is a 20-second pull, a 3-minute air phase, and a frantic burn at the end. Three phases:

Phase 1 (100% → 65%): Onyxia is on the ground and tanked at the back of the cave. Mostly a Patchwerk-style tank-and-spank with a tail swipe and cleave to manage.
Phase 2 (65% → 40%): Onyxia takes flight, becomes untargetable for melee, and rains Deep Breaths and adds. The longest, most chaotic phase.
Phase 3 (40% → 0%): Onyxia lands again and the fight returns to phase 1 mechanics, but with a brutal Bellowing Roar fear added in.

Phase 1 — the warmup

Main tank pulls Onyxia from the entrance back to the rear wall of the cave, ideally to a marked spot. Onyxia must face away from the raid at all times — her cleave hits hard and her tail swipe behind her sends people flying. Melee stack on her side, ranged spread along the back wall.

Damage in this phase is a straightforward DPS race against the 65% threshold. The faster you push her into phase 2, the fewer Deep Breaths you eat overall — but rushing without first establishing threat will get the second-on-threat one-shot when she swipes her tail through them. Wait three or four seconds before opening up. No-cooldowns in this phase; save everything for the burn.

Phase 2 — the airshow

At 65% Onyxia takes off. From here she does three things on a loose timer: Deep Breath (a fire breath across a random axis of the cave), Whelp adds spawning from the side tunnels, and the occasional fireball at a random raid member.

Whelps are the priority — a single mage or warlock with AoE assigned to whelp duty can shut them down, but if they overlap with a Deep Breath, the raid takes serious damage. Position so the whole raid can quickly shift to either flank when the breath warning shows. Don't bunch up.

Hunters and ranged DPS without strong AoE keep their damage on Onyxia (yes, you can still hit her in the air). Healers triage the fireball targets and any whelp damage that breaks through. Tanks save cooldowns for the phase 3 transition — when she lands, she lands aggro'd on whoever did the most damage in phase 2. Plan that pickup.

Phase 3 — the burn

At 40% Onyxia lands. Mechanically this looks like phase 1, but with three differences: Bellowing Roar fears the entire raid every 30 seconds, the tank takes more damage, and you should be popping every cooldown you have.

Tremor totems from shamans, fear ward from dwarf priests, and PvP trinkets are the three counters to Bellowing Roar. Coordinate them so at least one is always available — eating a fear at the wrong moment usually means the tank dies or melee gets cleaved into the wall. Hunters' Master's Call works in a pinch but is single-target.

Lust at 35% if you have it. Burn through 40 → 0 as fast as possible; the longer phase 3 drags on, the more Bellowing Roars you have to absorb.

Role tips

Main tank: face Onyxia away always, position consistently, and pre-call your defensive cooldown rotation for phase 3.
Melee: don't chase her into phase 2 — accept the dead time and conserve cooldowns. Stay on her flank, never her tail.
Ranged: spread on the back wall, watch for Deep Breath telegraphs, and shift on call. If you have AoE, you're either on whelps or you're not — pick before the pull.
Healers: phase 1 is a coast. Phase 2 is triage. Phase 3 is mana-burn time — pre-pot if you can, and know which CDs cover the fear cycles.

What to check in your log afterwards

After the kill, upload the log and open the Onyxia fight. A few things worth scanning:

Per-phase damage. The fight viewer breaks the fight into a timeline. If your phase 2 damage is <30% of phase 1 (ranged should be hitting the air), you're losing uptime — usually a positioning issue or healer DPS not switching back fast enough after triage.
Death timing. Most wipes have a single trigger event — a fear into a cleave, a Deep Breath into a Whelp wave. Open the deaths panel and look at the seconds before each death; it almost always reads as the same mistake clustered.
Class percentile vs. raid percentile. If you parsed 85 individually but the raid finished in 4:30 instead of 3:30, the raid was dragging — your absolute DPS was good, the encounter just lasted longer. The opposite (low individual percentile, fast kill) usually means you were healing-dispelling or doing whelp duty and not on the boss.
Whelp damage attribution. Mages and warlocks with AoE specs should have a meaningful chunk of their damage on whelps, not Onyxia. If they don't, your whelp control is being shouldered by someone who's giving up boss damage to do it.

Next step

Curious about the realm itself? What is Epog? covers what it is and why everyone's still raiding 3.3.5 content in 2026.