So I'm using the Eberron conversion of the Keep on the Shadowfell. The PC's have discovered the sinister rib that Kalarel has asked to be aquired. Then they proceeded to break it up into small pieces, burn it, and spread the ashes all over the place.
Needless to say, this makes the rest of the plot points regarding said rib a bit...difficult.
Anyways, does anyone have any suggestions on what to do?
I'm inclined to have the sinister rib actually to have been an element to stabilize the portal. Without it Kalarel is going to try to stabilize it himself, but when he dies, he gets dragged into the Portal as mentioned. However, then because the portal is unstable, the keep starts to collapse, requiring the PC's to race out (perhaps a skill challenge), and on exiting the keep, it collapses into the portal, and a manifest zone of Mabar gets generated in it's place.
Then, while hordes of undead don't come out, it will be apparent that _something_ escaped which then dovetails into the rest of the campaign.
I think in the discussions the players did think about keeping it, but then decided that no way they were going to take the thing INTO the keep.
Needless to say, this makes the rest of the plot points regarding said rib a bit...difficult.

Anyways, does anyone have any suggestions on what to do?
I'm inclined to have the sinister rib actually to have been an element to stabilize the portal. Without it Kalarel is going to try to stabilize it himself, but when he dies, he gets dragged into the Portal as mentioned. However, then because the portal is unstable, the keep starts to collapse, requiring the PC's to race out (perhaps a skill challenge), and on exiting the keep, it collapses into the portal, and a manifest zone of Mabar gets generated in it's place.
Then, while hordes of undead don't come out, it will be apparent that _something_ escaped which then dovetails into the rest of the campaign.
I think in the discussions the players did think about keeping it, but then decided that no way they were going to take the thing INTO the keep.