Some great ideas here.
I just finished an Eberron Dhakanni campaign (Goblinoid PCs) where they were trying to get their small clan to take the throne of Darguun. In what I knew was the final battle, three armies were facing off with the PCs holding an epic weapon that could destroy the enemy armies, but each time the weapon was used, there was a high probability of one of the creatures imprisoned in the device escaping.
So some of the group had to fight the escaping creatures, which got waay more difficult each time, while another tried to use the device (spellcraft rolls) to attack the armies.
In the end? The guy using the device rolled over 17 eight of nine straight times, only allowing one minor creature to escape, winning the war.
BUT, I had to plan otherwise
I wrote out a paragraph or two on each of the possible endings, to be read in the even that it came to pass. One of those included a TPK, which I figured was about 40% likely.
I loved this battle because it was all on them, they knew the DCs, they knew what might happen and the risks. It worked out great, IMO.
I just finished an Eberron Dhakanni campaign (Goblinoid PCs) where they were trying to get their small clan to take the throne of Darguun. In what I knew was the final battle, three armies were facing off with the PCs holding an epic weapon that could destroy the enemy armies, but each time the weapon was used, there was a high probability of one of the creatures imprisoned in the device escaping.
So some of the group had to fight the escaping creatures, which got waay more difficult each time, while another tried to use the device (spellcraft rolls) to attack the armies.
In the end? The guy using the device rolled over 17 eight of nine straight times, only allowing one minor creature to escape, winning the war.
BUT, I had to plan otherwise
I wrote out a paragraph or two on each of the possible endings, to be read in the even that it came to pass. One of those included a TPK, which I figured was about 40% likely.
I loved this battle because it was all on them, they knew the DCs, they knew what might happen and the risks. It worked out great, IMO.