Halfus Wyrmbreaker - Green Whelps/Stormdrake version with guide and commentary
I figure since i haven't seen this specific version of the fight i would do one for you. Hopefully this will help some of you unlucky enough to get stuck with only the green whelps, stormdrake, and nether scion up.
Our raid got Knockback+Mortal Strike+100% attackspeed. What should have taken us topmost an hour, took us the entire night, and we only got him to <10%.