I want to create a semi-spherical illusion on a window of a (most likely) goblin guard in a tower.
Mathematically speaking, how big can a Spectral Image (Wizard Utility 2) be if I were to make it semi-spherical?
It conjures an illusion up to medium size in one square. So, assuming it can cover a minimum of 25 square feet (one square being 5x5 feet) that would mean: 2(pi)r^2 = 7.62m
And thus have a radius of 2.27615788m if I were to cast a completely semi-sphere illusion on a flat surface but since this is a tower (which I assume would be cylindrical) my radius would be slightly smaller than that (but then again, that would only matter if the goblin sticks it's head out of the window and looking towards the walls, see that the "unaffected" surroundings don't "align" with the illusion properly)
Which I suppose is safely "out of reach" for the goblin, unless it pokes it's spear out of the window or something.
Now the window of uncertainty here is that I assumed the minimum surface area is 25 square feet when I actually cast a medium sized illusion.
Eitherway, I just wanted to dump my ramblings and thoughts on you guys.
Thoughts and opinions?
EDIT: And just to clarify, it's for my pbp campaign here "Desolation Island". As I have said, no one in my country (Malaysia) plays AFAIK. (Technically there is, but their a really small community and they're about 1200 km away :<)
Mathematically speaking, how big can a Spectral Image (Wizard Utility 2) be if I were to make it semi-spherical?
It conjures an illusion up to medium size in one square. So, assuming it can cover a minimum of 25 square feet (one square being 5x5 feet) that would mean: 2(pi)r^2 = 7.62m
And thus have a radius of 2.27615788m if I were to cast a completely semi-sphere illusion on a flat surface but since this is a tower (which I assume would be cylindrical) my radius would be slightly smaller than that (but then again, that would only matter if the goblin sticks it's head out of the window and looking towards the walls, see that the "unaffected" surroundings don't "align" with the illusion properly)
Which I suppose is safely "out of reach" for the goblin, unless it pokes it's spear out of the window or something.
Now the window of uncertainty here is that I assumed the minimum surface area is 25 square feet when I actually cast a medium sized illusion.
Eitherway, I just wanted to dump my ramblings and thoughts on you guys.
Thoughts and opinions?
EDIT: And just to clarify, it's for my pbp campaign here "Desolation Island". As I have said, no one in my country (Malaysia) plays AFAIK. (Technically there is, but their a really small community and they're about 1200 km away :<)
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