Historical Rules · 13 October 2023
Rule 309.4c
Official source text from the 13 October 2023 Rules release
Each room has a triggered ability called a room ability whose effect is printed on the card. They all have the same trigger condition not printed on the card. The full text of each room ability is “When you move your venture marker into this room, [effect.]” As long as a dungeon card is in the command zone, its abilities may trigger. Each room ability is controlled by the player who owns the dungeon card that is that ability’s source.