this post was submitted on 05 Oct 2025
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Depends how gonzo you get with the fantasy, the setting's cosmology, and whether your gm is an engineer who does relativity math.
I'd say since spells work the way they do, they always use the relative frame of reference of the caster when cast and the relativ frame of reference of whatever it affects when counting the duration.
So it's not certain that 9.5 years will pass in the next decade, if you do relativity shenanigans?
9,5 year for whom in whose decade? 9,5 years for you in your next decade? Guaranteed to happen. 9,5 years for me in your next decade or for you in mine? Not guaranteed.
Feywild would be possible but by RAW the time difference is only calculated once you leave the feywild.
The problem is that you only roll once they leave the feywild. Up to that point time between the two planes works in sync. You effectively just time travel when leaving depending on the result of your roll.
There's a 5% chance that days become years. Based on just that alone, for every 20 days spent in the feywild you're missing a year in the rest of the world. I got a factor of 22.7 on average for a 7-day week, and 23.3 if it's ten.
They said if you average the trips out. It's not exactly helpful here, but for every one-day trip to the feywild, it will be on average, 23.3 days until you get back.
"Subjectively true" is really the only kind of true anyway.
'Yes but this planet is on a much longer orbit and its [time it takes to orbit] is the same, so it must be moving much faster then the one you're teleporting to, where...'
I wholeheartedly disagree. The passage of time within a given frame of reference is an objective fact. Relativity existing doesn't negate objectivity. If anything, it makes the gathering of objective evidence and reference points more necessary.