Offense

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 Hazard Offense table on page 115). Complex hazards usually have more moderate attack bonuses (abbreviated as C. Atk in the table). You can adjust them further using the Strike Attack Bonus table on page 124 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.