The Sinister Chris
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I'm usually decent at figuring out the pricing formula for magic items, including the ones not listed. However, I've been having trouble figuring out what the formula would be for charges per day if you had multiple options to use the charges on.
For example: a mask that has three uses per day of either see invisibility or blindness (per blindness/deafness) that you can choose how many of the three charges are used on each of the two spells.
This also comes with the question of whether there would be a price reduction for only being able to do blindness, but not deafness?
I'd like to know if there's an actual formula for calculating this that I might have missed.
Thank you in advance to anyone with answers.
