Caustic Blast (Elite)
Trap
Level 10 Elite Blaster
XP 800

Four sections of wall hide nozzles that let loose a blast of caustic gas every few seconds once triggered.

Perception     DC 26: The character notices a hidden nozzle. (DC 16 after viewing the phantasm if a DC 16 Intelligence check is made first, or if the PCs specifically look near the sconces.) Additional nozzles can be noticed with a DC 12 check.     DC 30: The character notices the trap’s connection to the chest in the center of the room. (DC 10 after viewing the phantasm if a DC 12 Intelligence check is made first.)TriggerWhen a character attempts to open or move the chest in the center of the room, the jets make their first attacks as immediate reactions. They then enter the initiative order directly after the creature that triggered the trap, attacking each round. The blasts cease as soon as all creatures have left the room.AttackImmediate Reaction or Standard Action      Close blast 4
Target: Each creature in blastAttack: +11 vs. Reflex; creatures in squares that are overlapped by more than one blast are subject to attacks from each of the overlapping blasts.Hit: 3d8 + 4 acid damage and followup    Followup +9 vs. Fortitude    Hit: Ongoing 5 acid damage and blinded (save ends)Miss: Half damage.Note The caustic gas damages only organic matter (including living creatures, clothing, ropes, and so on), leaving equipment of stone, metal, and other inorganic substances unharmed.Countermeasures     Thievery DC 23: A character adjacent to a vent can delay one caustic blast for 1 round with a successful check.
     Thievery DC 26: A character adjacent to a vent can disable one caustic blast with a successful check.
     Thievery DC 30: A character adjacent to the chest can disable all the caustic blasts with a successful check.
     Strength DC 20: A character can tie off and drag the chest from the room and out of the area of the blasts with a successful check. The implement used to drag it must be inorganic (such as a metal chain) to avoid being destroyed.

Published in FR1 Scepter Tower of Spellgard, page(s) 45.