However it is worth noting that the spell also says the condition to end the spell must be something the DM agrees to AND is likely to happen in the next decade. So it won’t be a cakewalk to be suddenly immune to aging.
The first part is hard, but 9.5 years passing is guaranteed to happen in the next decade.
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.
The first part is hard, but 9.5 years passing is guaranteed to happen in the next decade.
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.