- a partial TPK
- a dead dragon
- or both!
Me, I'm hoping for
One thing about such a delve, though, is that the PCs still don't entirely know how to handle dragons.
They've heard about needing dragon-slaying swords, or an arrow to a vulnerable spot (but not just any arrow, one particular arrow) but don't know if that's true.
They've heard you can capture dragons and sell them . . . but don't know if that is true.
They do know that a plethora of spells seem useful against dragons:
Walk on Air
They are stockpiling spellstones with such spells, plus healing, plus mundane tools to carve up a dead dragon, plus potions, plus anything else they can think of.
They've making their lists and checking them twice, as the season requires.
Me, I've long ago made up that dragon . . . and I can't wait to see how it all turns out.