d100 Encounter
00 1d3 hydras
Swamp Encounters (Levels 11–20)
d100 Encounter
01 – 10 1d4 giant crocodiles
11 – 15 1d3 yuan-ti abominations
16 – 20 1d6 + 1 green hags
21 – 25 A large, spreading tree from which 2d6 armored knights hang by the neck
26 – 30 2d4 wights
31 – 35 1d8 + 1 yuan-ti malisons
36 – 40 Fog that rolls across the terrain, making the area within 1d3 miles heavily obscured for 1d4 hours
41 – 45 1d4 revenants
46 – 50 1d6 shambling mounds
51 – 55 1d10 water elementals
56 – 60 1d4 young black dragons
61 – 65 An eerie, bat-headed idol almost completely covered by vines
66 – 70 1d8 + 2 trolls
71 – 75 1d3 hydras
76 – 80 The sound of drums beating several miles away
81 – 96 1 adult black dragon
97 – 00 1 ancient black dragon
Underdark Encounters
Underdark Encounters (Levels 1–4)
d100 Encounter
01 1 mind flayer arcanist
02 1d3 + 1 giant poisonous snakes