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GM Core / Chapter 2: Building Games / Building Hazards

Offense

Source GM Core pg. 111 2.0
Almost all hazards need an attack bonus or a save DC, and hazards that deal damage need to list a damage value. Simple hazards deal about twice as much damage as complex hazards and have a very high attack bonus (abbreviated as S. Atk in the table). Complex hazards usually have more moderate attack bonuses (abbreviated as C. Atk in the table). You can adjust them further using the Attack Bonus table on page 120 if your hazard needs it. Simple hazard DCs aren't as high for their level as their attack bonuses are, since effects with DCs usually have some effect even on a successful saving throw; use the EDC and HDC columns for extreme and hard DCs in the table.

The damage columns on the table give a damage expression you can use, followed by the average damage in parentheses. If you want to make your own damage expression, remember that average damage is 2.5 for a d4, 3.5 for a d6, 4.5 for a d8, 5.5 for a d10, and 6.5 for a d12.

Table 2–16: Offense

LevelS. AtkC. AtkSimple DmgComplex DmgEDCHDC
–1+10+82d4+1 (6)1d4+1 (3)1916
0+11+82d6+3 (10)1d6+2 (5)1916
1+13+92d6+5 (12)1d6+3 (6)2017
2+14+112d10+7 (18)1d10+4 (9)2218
3+16+122d10+13 (24)1d10+6 (12)2320
4+17+144d8+10 (28)2d8+5 (14)2521
5+19+154d8+14 (32)2d8+7 (16)2622
6+20+174d8+18 (36)2d8+9 (18)2724
7+22+184d10+18 (40)2d10+9 (20)2925
8+23+204d10+22 (44)2d10+11 (22)3026
9+25+214d10+26 (48)2d10+13 (24)3228
10+26+234d12+26 (52)2d12+13 (26)3329
11+28+244d12+30 (56)2d12+15 (28)3430
12+29+266d10+27 (60)3d10+14 (30)3632
13+31+276d10+31 (64)3d10+16 (32)3733
14+32+296d10+35 (68)3d10+18 (34)3934
15+34+306d12+33 (72)3d12+17 (36)4036
16+35+326d12+35 (74)3d12+18 (37)4137
17+37+336d12+37 (76)3d12+19 (38)4338
18+38+356d12+41 (80)3d12+20 (40)4440
19+40+368d10+40 (84)4d10+20 (42)4641
20+41+388d10+44 (88)4d10+22 (44)4742
21+43+398d10+48 (92)4d10+24 (46)4844
22+44+418d10+52 (96)4d10+26 (48)5045
23+46+428d12+48 (100)4d12+24 (50)5146
24+47+448d12+52 (104)4d12+26 (52)5248