Rod of Cancellation vs Random Deflector

[Cedric]

I dont think your getting the point the shield is enchanted with prismatic sphere, upon command word the shield casts prismatic sphere (much like a wand or rod) except there are no charges. There sphere would not move at all, it is stationary. what we were wondering is that would the rod of cancelation remove the echantment from the shield or could the warmage (Thats me) be able to cast random deflector and bounce the effects of the rod of cancelation.

Ok, it's the use of "permanency" here that had me confused. Because you cannot use permanency to make Prismatic Sphere a Command Word activateable spell built into a shield (or any other object). That would require craft magic arms and armor or craft wonderous item depending on the object.

As such, just like any other non-artifact magic item, it makes a DC 23 Will save or the shield loses any magical properties it had, include the ability to cast Prismatic Sphere as a command word power.

However if the Rod of Cancellation were to be used against the Prismatic Sphere itself, it would not affect the shield at all.

I am not that familiar with random deflector, however considering what the rod of cancellation does (as a one use magic item for all intents and purposes) I would be disinclined to have it easily thwarted.

On a side note, making a 9th level spell 'command word' useable on a wonderous item is spendy...over 275,000gp base cost + other stuff.

 

[Cedric]

I have another question, related to the above, is it even possible for the Prismatic Sphere to be bound to the shield? Even though in the rules for Permanency it says it can be bound to an object? And along those lines if it is possible can the spell be brought up and back down using a command word. No where in the rules for Permanency does it say thats possible. And quite frankly gets rid of the point of Permanency a bit if it isn't, ya know, permanent. Just makes it so the spell can be used for free dependent on the charges.

Nope...

Permanency is a spell that is cast AFTER another spell to change the duration from whatever it would normally be, to permanent.

So, in order to make a Prismatic Sphere permanent, you must first cast Prismatic Sphere...and it cannot be cast on an object. The fact that you (or someone else even) intends to follow up with a permanency doesn't allow you to cast Prismatic Sphere any differently than you would otherwise.

Also, once it is permanent, there is no mechanism (short of an anti-magic shell) that allows you to turn the ability off and on. It's just on, until dispelled.

 

[Galamir]

Thanks for the advice, We were a little confused on the wording. As for the cost estimate isnt it (spell level x caster level x 1800) / (5/ charges per day)? which was high but not that high... and if my calculation is wrong what is the acctuall formula for this and where can we find it if we need to make another item?

 

[Cedric]

Thanks for the advice, We were a little confused on the wording. As for the cost estimate isnt it (spell level x caster level x 1800) / (5/ charges per day)? which was high but not that high... and if my calculation is wrong what is the acctuall formula for this and where can we find it if we need to make another item?

That's right, but if you don't limit charges per day then it's just (spell level x caster level x1800). So that's 9 x 17 x 1800 = 275,400gp