Chapter 3: The Darklake
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When the Troll is distracted by Cemos, Dustin let's fly.
Rolls
Hand Crossbow - (1d20+8)
(17) + 8 = 25
Hand Crossbow Damage and sneak attack - (1d6+5, 3d6)
1d6+5 : (6) + 5 = 11
3d6 : (145) = 10
I've got this! cemos opens a portal of light above his head and a single strand of beard hair from the great Lord of the mountain drops upon his brow. With with luscious locks flowing from the dwarfs face he runs towards the troll taunting him all the way and prepares battle.
Rolls
Scorching Ray - (1d20+7)
(19) + 7 = 26
Scorching Ray - (1d20+7)
(7) + 7 = 14
Scorching Ray - (1d20+7)
(13) + 7 = 20
Damage - (2d6)
(56) = 11
Damage - (2d6)
(54) = 9
Damage - (2d6)
(45) = 9
Fang, Shuushar, Eldreth, Georges, and Francis work on getting the boat under control, succeeding on starting out of the whirlpool's grasp.
Stool slices at the creature, missing.
The beast bites at Cemos, missing. However, the two follow-up claws both hit, slicing into you, dealing 15 points of damage (21 before reduction).
PCs up.
Rolls
Strengths (Fang, Georges, Eldreth, Shuushar, Francis) - (1d20+6, 1d20+5, 1d20+4, 1d20+1, 1d20)
1d20+6 : (18) + 6 = 24
1d20+5 : (19) + 5 = 24
1d20+4 : (15) + 4 = 19
1d20+1 : (7) + 1 = 8
1d20 : (4) = 4
Stool Attack (Main Hand, Sneak, Off Hand) - (1d20+3, 1d6+1, 1d6, 1d20+3, 1d6)
1d20+3 : (6) + 3 = 9
1d6+1 : (2) + 1 = 3
1d6 : (4) = 4
1d20+3 : (3) + 3 = 6
1d6 : (2) = 2
Secret Roll
Secret Roll
As for your plan, since I don't think you have a potion belt or anything like that, it'd be an action to find your potion and a free action to consume it (so you'd have to forgo your dodge for one round to find the potion, and then you can freely drink and try manhandling him or something of that nature).

you would make a nice belt!?! Hummmm.