Hello everyone,

So I'm facing a bit of an issue here. I have this scenario where my players need to stop the summoning of a big bad demon with a real chance of failing, I could simply go "as you get to the sacrificial chamber you hear the chanting get frantic while sulfur blows in your face" but I find it a bit too "convenient" to always have the demon being summoned when the players arrive.

One of my idea was to have a pool of time going to a room would cost one point, searching 2 points etc... and once the pool is empty, the summoning is done and here comes the demon. But that's a first draft, what do you think would be appropriate? is it even a good idea to hurry the PCs that way?

thanks for your input