To clarify, being unaware doesn't actually make a person a valid target on sneak attack on its own. Usually when someone is unaware of an opponent that person is denied its dex against the enemy. (For example a rogue attacking a 3rd level barbarian with Uncanny Dodge will not get to sneak attack even if he is invisble or using stealth because Uncanny Dodge prevents them from being flat-footed, or lossing their dex to AC even if the character is invisible.)
As sneak attack says and was posted earlier, you can only Sneak Attack when flanking, the opponent is denied their dexterity to AC, or fienting (which is just a special action that denies the enemy their dexterity to AC).
So Uncanny Dodge will prevents most of the ways that allow for a rogue to pull off sneak attack. If you can get flanking and the enemy only has Uncanny Dodge then it will work. But remember, most people with Uncanny Dodge will also have Improved Uncanny Dodge at high enough level (usually 5th) which denies flanking as well.
Although the feature hasn't been altered since the recent stealth errata, my assumption would be that Uncanny Dodge should now read something like:
She cannot be caught flat-footed, nor does she lose her Dex bonus to AC if the attacker is invisible or has beaten her on an opposed Perception vs. Stealth check. She still loses her Dexterity bonus to AC if immobilized. A rogue with this ability can still lose her Dexterity bonus to AC if an opponent successfully uses the feint action (see Combat) against her.
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Although given that Feint still can deny DEX bonus, perhaps that isn't true. It would be odd if the invisible condition was countered by Uncanny Dodge but stealth 'concealment' was not...
To Xaratherus, I wasn't going to open that can of worms at all and invite the hordes of damage hungry rogues who will try to assert now that Uncanny Dodge doesn't deny a stealthed rogue sneak attack but would deny an invisible rogue such.
To believe that being invisible is somehow more counterable than being merely hidden is incredibly silly.
To Xaratherus, I wasn't going to open that can of worms at all and invite the hordes of damage hungry rogues who will try to assert now that Uncanny Dodge doesn't deny a stealthed rogue sneak attack but would deny an invisible rogue such.
To believe that being invisible is somehow more counterable than being merely hidden is incredibly silly.
I'm going fishing this weekend, so I could use the worms. I might actually make a separate FAQ post on it. ;)
And yes, I agree - it would be incredibly silly for it to counter invisibility but not stealth.
I don't see where Defensive Strategist mentions invisibility. So, if the opponent only has the Defensive Strategist trait, and the rogue is invisible, the rogue gets sneak attack?To clarify, being unaware doesn't actually make a person a valid target on sneak attack on its own. Usually when someone is unaware of an opponent that person is denied its dex against the enemy. (For example a rogue attacking a 3rd level barbarian with Uncanny Dodge will not get to sneak attack even if he is invisble or using stealth because Uncanny Dodge prevents them from being flat-footed, or lossing their dex to AC even if the character is invisible.)
Yes, Defesnive Strategist only helps to alieviate the flat-footed portion that would allow Sneak Attack. An Invisible Rogue against an enemy with only Defensive Strategist would denies his enemy their Dex to AC which allows for a sneak attack.
I see, so after the opponent acts, the rogue would get SA.
No, not quite. Normally a rogue could sneak attack someone in a surprise round or at the start of combat before their first turn because they are flat-footed (this is a specific condition). Both Defensive Strategist and Uncanny Dodge deny this outright. After the first round the rogue must deny someone their dex to AC, successfully feint, or flank an enemy to get a Sneak Attack. Normally, Stealth or Invisibility are the easiest ways to deny someone their Dex to AC, but it doesn't work on someone with Uncanny Dodge, so you would have to flank or feint. Against someone with Improved Uncanny Dodge they cannot be flanked (unless by a rogue 4 levels greater) and then the only method of sneak attack would be feinting.
Uncanny Dodge is supposed to allow you to react to things you cannot percieve, which mechanically used to only mean invsibility. Now it should include stealth because stealth can now deny an enemy its dex to AC, which it could not do before the recent errata. Common sense says it applies to both, but as I predicted, people have already rode in to try and say that you can use stealth to sneak attack somone with Uncanny Dodge by being stealthed.