SYSTEM REFERENCE DOCUMENT 3.5 |
Table: CR Modifiers for Mechanical Traps |
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Feature |
CR Modifier |
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Search DC |
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15 or lower |
–1 |
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25–29 |
+1 |
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30 or higher |
+2 |
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15 or lower |
–1 |
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25–29 |
+1 |
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30 or higher |
+2 |
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Reflex Save DC (Pit or Other Save-Dependent Trap) |
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15 or lower |
–1 |
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16–24 |
— |
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25–29 |
+1 |
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30 or higher |
+2 |
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Attack Bonus (Melee or Ranged Attack Trap) |
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+0 or lower |
–2 |
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+1 to +5 |
–1 |
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+6 to +14 |
— |
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+15 to +19 |
+1 |
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+20 to +24 |
+2 |
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Damage/Effect |
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Average damage |
+1/7 points* |
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Miscellaneous Features |
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Alchemical device |
Level of spell mimicked |
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Liquid |
+5 |
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Multiple target |
+1 (or 0 if never miss) |
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Onset delay 1 round |
+3 |
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Onset delay 2 rounds |
+2 |
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Onset delay 3 rounds |
+1 |
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Onset delay 4+ rounds |
–1 |
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Poison |
CR of poison (see below) |
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Black adder venom |
+1 |
Large scorpion venom |
+3 |
Black lotus extract |
+8 |
Malyss root paste |
+3 |
Bloodroot |
+1 |
Medium spider venom |
+2 |
Blue whinnis |
+1 |
Nitharit |
+4 |
Burnt othur fumes |
+6 |
Purple worm poison |
+4 |
Deathblade |
+5 |
Sassone leaf residue |
+3 |
Dragon bile |
+6 |
Shadow essence |
+3 |
Giant wasp poison |
+3 |
Small centipede poison |
+1 |
Greenblood oil |
+1 |
Terinav root |
+5 |
Insanity mist |
+4 |
Ungol dust |
+3 |
Wyvern poison |
+5 |
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Pit spikes |
+1 |
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Touch attack |
+1 |
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* Rounded to the nearest multiple of 7 (round up for an average that lies exactly between two numbers). |