C1: The Hidden Shrine of Tamoachan Conversion Notes

Notes for the Dungeon Master

Collapsing Corridors: Rules for collapses are detailed on pg. 66 of the DMG. Any character casting a fireball, lightning bolt or similar spell or effect (DMs discretion) causes a cave-in. Cave-ins are centred on the middle of the blast template for area effect spells and at the impact point for targeted spells.

Poison Gas: CR 3; mechanical; location trigger; automatic reset; gas; never miss; onset delay (10 rounds); poison (special poison gas, DC 18 Fortitude save resists, 1D6/0 hit point damage); Search DC 10; Disable Device N/A

[Design Note: Straight out of the gates, something tricky to convert – the original poison does a straight 1d6 damage per AD&D round (1 minute); poison in 3.5E D&D tends to both allow a saving throw and do ability damage. Since this poison is designed to kill players, in 3.5E terms it would do Con damage; the problem with this is that if we have the player take even 1 point of Con damage every minute the average sixth level character will be way dead in about 10 minutes, where as the original gave characters a survival time of between 10 minutes and 1 hour. I opted to have the poison do hit point damage, which is non-standard for 3.5E but in keeping with the original – I've allowed the player a average difficulty Fort save to bring the poison gas up to date and compensate for the lower hit points of 3.5E characters.]

Dried Potions: A character eating a dried potion must make a DC 15 Fort save or be affected by a Confusion spell cast at level 4 (SR not applicable).