Servants of the master
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Rolls
First Day Servants of the Master - (1d20)
(13) = 13
Worgs - (1d4+1)
(3) + 1 = 4
They're too big to enter through the windows but could still try to break them for future spies (lead-lined stained glass windows, AC: 3, Hard: 2, HP: 3, see ECR p.197). If not, they'll have to break down the front doors (strong wooden doors, AC: 3, Hard: 5, HP: 20, Break DC: 23, Open Lock: 25).
See http://www.d20pfsrd.com/equipment/damaging-objects/
That last wolf is currently at -1 hp. It stabilized and became conscious 2 hours later. Unless the players kill it off right away, it will be able to make its way back to castle Ravenloft and report to Strahd...
Rolls
Spy - (1d20+1)
(4) + 1 = 5
1d4+1 dire wolves - (1d4+1)
(3) + 1 = 4
Stabilize checks (DC10) - (1d20+3, 1d20+3, 1d20+3, 1d20+3, 1d20+3)
1d20+3 : (19) + 3 = 22
1d20+3 : (6) + 3 = 9
1d20+3 : (12) + 3 = 15
1d20+3 : (18) + 3 = 21
1d20+3 : (18) + 3 = 21
Rolls
Servants of the master: day 2 - (1d20+1)
(4) + 1 = 5
1d3+1 Vistanis - (1d3+1)
(3) + 1 = 4
Rolls
Servants of the master night 3 - (1d20+2)
(3) + 2 = 5
1d4+1 dire wolves - (1d4+1)
(1) + 1 = 2
Rolls
Servants of the master, day 3 - (1d20+3)
(20) + 3 = 23
Servants of the master: night 3 (for Weiryn and co.) - (1d20+3)
(13) + 3 = 16
1d4+1 vampire spawn. - (1d4+1)
(3) + 1 = 4
Rolls
Servants of the Master night 4 - (1d20+3)
(14) + 3 = 17
Number of wights - (1d3+1)
(2) + 1 = 3
Wraith Perception check to spot the assassin vines - (1d20+10)
(20) + 10 = 30
1st wight Perception check - (1d20+11)
(8) + 11 = 19
2nd Wight Perception check - (1d20+11)
(10) + 11 = 21
3rd Wight Perception check - (1d20+11)
(7) + 11 = 18
Rolls
Servants of the master, day 4 - (1d20+4)
(3) + 4 = 7
1d3+1 Vistanis - (1d3+1)
(3) + 1 = 4
Rolls
Servant of the master - (1d20+5)
(12) + 5 = 17
Wights - (1d3+1)
(3) + 1 = 4