So I'm in need of a time macguffin.
I've essentially messed up in the current storyline I'm running where earlier on the PC's have been made aware that the defeat of the enemy is on a deadline. I'm usually quite fine with messing up as a DM, as it leads to fun and creativity, on both the players and Dm side of things. But in this case, I've painted myself into a corner.
Now, I could of course simply hamfist things by making up some reason for a delay in the plans of the enemy. But I've been running this campaign for over 25 years, with the same players, and they're obviously a canny bunch.
Similarly, I could bring in a workaround by introducing some manner of chronomancy, but I've done well in avoiding that lunacy so far.
What I'm looking for then, is some location, being, or object, that makes sense in the Planescape world, that I could make use of to drop the PC's back into the overall story arc, back in the correct time.
I haven't dug through everything yet but, so far, the closest thing I can find that might work would be something related to the Mausoleum of Chronepsis. I know, that's a stretch, but I could make it work.
Does anyone have any other suggestions? Maybe a 'timeless' place? A 'slipped gear' out of time? A taproot of Yggdrasil?
Just grasping at straws...
p.s. By way of explanation: the party got 'off schedule', by taking a tangent opportunity that lasted for just over a year, real time. I pretty much run sandbox all the time. This through the PC's about 4 weeks past the deadline, gametime.