Obstacle

Add an obstacle to the current or adjoining room
Suggestion: A palpable gas smell hangs in the room.
It is unclear where it is leaking from, but special
care should be taken with fire and weapons.
[If a Player shoots a weapon or lights a fire, have them roll a d6. On a 1-2, the room ignites, and each creature in the room takes 2 damage. Any creature who remains for more than 2 turns after is considered Burning.]