Onyxia is a specially re-released encounter to celebrate WOW’s 5th anniversary. Today, I’ll go over the basic strategy for the fight from a hunter’s perspective. The fight has 3 phases:
This phase is a simple single target burn that lasts until you get her down to 65%. During this time, she will do moderate raid damage and will periodically send people in melee range flying back.
Once you get her to 65%, she takes flight and will summon a veritable army of onyxian whelps. I didn’t get a good count, but there were at least 25 on the 10 man version- and with this many whelps, their name plates were literally covering my entire screen. Use your new powered up volley here, but keep Onyxia targeted and fire more DOTs (black arrow, explosive shot, and serpent sting) at her when they’re off cooldown between volleys. Also, save your feign death for this phase- you might attract some whelp attention with all the AOE you’re doing.
She next starts to summon lair guards. These don’t last long, but they do a hard hitting AOE. Take them out.
During this time, she will take that deep breath we keep hearing jokes about- what this means is that she will pick a direction, and destroy anything in her path. Watch her carefully, and when you see an emote about a deep breath, make sure you aren’t in her path.
Once you get her to 40%, she lands again and starts to fear people in addition to all this other stuff. These fears last 3 seconds. She’ll also cause parts of the floor to gush fire which does light fire damage- try not to stand on the cracks between floor plates. If you get feared into one, have a health pot handy. Sometimes she fears or kicks people so far/hard that they spawn another army of whelps. If this happens, you’re going to need a lot of heavy tanking, healing, and AOE DPS to get back on track. Position yourself close enough to minimize the risk of your being the one that gets kicked/feared into the caves.
That’s pretty much all there is to this fight- straight forward, and easy to outgear. The rewards are on par with the T9 content in ToC. Have fun!
[edit: don’t forget the secret hunter perch.]