hey everyone,
like the subject says i am looking for advice on causing a cave-in of a cave 60ft wide and 60ft tall.
there is a white dragon in this cave. The objective is to lure the dragon out, then set off a cave-in to stop the dragon from getting back in, so the party has time to gather up the treasure hoard and escape with a dimension door.
What would you recommend to cause this cave-in? some kind of explosives? how exactly would the rules work for an explosion like this?
any advice would be greatly appreciated. thanks!