Clarification on combining Sneak Attack and Whirlwind (Storm Shape).

[Lemonman]

Hey there, this is my first post on the Paizo forums, so feel free to point out any errors I make in my post as such.

I'm currently playing a game of pathfinder in which I did not have an initial strong character concept in terms of classes and mechanical goals (but I did for roleplay purposes etc). Eventually, I will have about 8 levels in a Wind-mystery Oracle, 2 levels in Rogue, and I'm currently feeling good about the Master of Storms prestige class, but I have questions regarding it.

A link to the class. And the ability in question.

I'm aware of the difference between applying a -4 penalty to dex and denying an opponent his dex bonus to AC, so that's not my question. I'm concerned about the much more contrived example of when I use Storm Shape (Whirlwind) in conjunction with the Wind Oracle's invisibility revelation.

Essentially, as an invisible whirlwind, should I deal sneak attack damage to a target caught in my winds that I deal unarmed strike damage to? If so, and I have multiple characters picked up at once, could I deal sneak attack bonus damage to all of them even when using lesser invisibility (I'm aware that it breaks on the first attack)?

Tangentially, is it possible to flank an opponent who shares a square you occupy (as in whirlwind)?

I'm aware of the contrived nature of my problem, and I appreciate any and all help.

[Sazbirtraz]

While you deal damage in a whirlwind equivalent to a slam attack (edit: unarmed strike in the case of the master of storms), you are not actually attacking them with an attack roll or an attack action, so I don't think sneak attack would apply, regardless of the situation.

If nothing else (and this is just purely my opinion), I would say being a tornado would negate any ability to pick out or reach a vital spot on an opponent, as I don't think a tornado, even a sentient one, would be able to precisely control how anything caught within it is bashed around.

[Komoda]

No attack roll = no sneak attack.

Coup de Grace is the only exception that I am aware of.

[Lemonman]

Quite a large oversight on my part, thank you for the help!