It does!
And it does well - it's just like alpha strike for the wolf, on a lower cooldown.
I'm thinking of builds that can take advantage of this. I have a clear winner in my head, but I'm curious as to what you guys think:
8 Druid gets you winter wolf
9 gets you death ward
11 gets you frostbite and greater creeping cold
13 regenerate and true seeing (not a big deal to some, but it is to me personally
17 gets you snowslide (abundant step)
13 Druid/5 Cleric/2 Fighter would be a compelling tree build, sorta
13 Druid/6 Monk/1 Fighter gets access to shadow fade, extra action boosts for haste boost and doublestrike boost, 30 extra melee power from henshin, and ocean stance for dodge and save
(exploity)10 Druid/6 Bard/4 Fighter gets stalwart HP bonuses, SWF/Shield Mastery stacking, access to bard T5's including the insta-kill and crit enhancement.
(exploity)10 Druid/8 Fighter/2 Ranger gives a ton of extra feats for SWF/TWF/Whirlwind and/or Natural Fighting.
20 Druid gets you very little by comparison, but you should be able to get WWA and Shield Mastery feats as a human.
EDIT: best dps I can think of with both Whirlwind and the exploit feats is a human 10 Druid 6 Ranger, 4 Fighter taking DWS T5 and using Exposing Strike to constantly activate SA. You get Whirlwind, all three NF feats, full twf and swf lines, improved crit, overwhelming crit, and can fit in quicken or precision, and eTWF with tons of positive SP. That amounts to 33-53% (83% boosted) doublestrike before equipment with 80% off hand and the fastest attack speed possible. Whirlwind should hit 3-4 times, and you can keep adding attack speed with harrier. As an added bonus, you can pick up four legs good and switch between that and harrier when you need knockdown invulnerability and can respect your enhancements to have the natural fighter T5 for a decent tree build that also has a ton of doublestrike.
Thoughts?