Catching up to her prey, Ris-Janna wreathes her daggers in shadows before slashing at the tree-thing, using her best judgement to pick seemingly vulnerable spots to attack. As the blades impact, the shadows sear the wood, and Ris-Janna smiles at the tree-man as the becomes visible again.
"Let's dance."[spoiler]Yep, only Move Silently, IIRC.
-5? Sure, whatever. Here's your check.
1d20+29-5+20=56 The extra +20 is from being invisible.
And a Move Silently; the penlaty is negated by Gray "spidersilk" armor's ability.
Move Silently (1d20+31=44)Swift action: Activate Burning Blade for +1d6+IL(4) fire damage on my attacks this turn.
Standard action: Attack! The rolls assume he's a plant creature and thus immune to critical hits, so she won't get a +2 to hit from Deathly Precision, and that he's not flat-footed, having seen her before she hid. If he is flat-footed, add +8 damage per attack. The first attack is made with piercing damage, the second with slashing damage (or piercing as well if piercing dealt full damage), in case he's got DR.
Full Power Attack.
Attack: +6 BAB, +8 Dex, -1 UA, +1 WF, +3 Enhancement, -6 PA; Damage: +3 Enhancement, +12 PA, +3d6 SA, +1d6+4 fire. (1d20+19-6=21, 1d4+15+3d6+1d6+4=32, 1d20+19-6=31, 1d4+15+3d6+1d6+4=29)EDIT: They should be at +2 due to Invis, though. Oops.
EDIT 2: I should've made a Fort save, no?
Fort save (1d20+13=22, 1d20+13=21)Erm, oops. Forgot to make only one roll after the double-roll for attacks and damage. Just take whichever you like better.
[/spoiler]