Magic Item Costs - Sleep Arrows?

jaults

First Post
How do you figure the cost for something like a Sleep Arrow?
Sleep Arrow: This +1 arrow is painted white and has white fletching. If it strikes a foe so that it would normally deal damage, it instead bursts into magical energy that deals nonlethal damage (in the same amount as would be lethal damage) and forces the target to make a DC 11 Will save or fall asleep.
Faint enchantment; CL 5th; Craft Magic Arms and Armor, sleep; Price 132 gp; Cost 69 gp 5 sp + 5 XP.
A Druid in our party would like to make or buy Rusting Sling Bullets (bullets that cast Rusting Grasp when they hit)...

Thanks,
Jason
 

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He wants a packaged, throwable, single charge, fourth-level spell? That sounds a lot like a bead of force.

The beads cost 3000 gp each. I'd price a "rusting bullet" somewhat higher, say 3500 each, because they effectively turn a Touch spell into one with Close range.
 

Cool idea though. If you can decide on a balanced price (3500 perhaps, as AuraSeer says), it sounds like a nice addition to the game.

DM2
 

jaults said:
A Druid in our party would like to make or buy Rusting Sling Bullets (bullets that cast Rusting Grasp when they hit)...

T&B has a cool any spell, single use, use-activated pricing formula that I think works well for something like this. The formula, 4*7*100 would yield a price of 2,800gp. Considering that simply striking a target with such a sling bullet would not actually trigger the effect (the spell only effects one touched nonmagical ferrous object, though you can just strike the target if its a ferrous creature), that you would actually have to strike the object in question, the price seems fair to me. I just wouldn't allow someone to attack a fighter with such a bullet and have it automatically destroy a random item. Basically, I'd make you specifically attack the item, just like the spell requires.

jaults said:
How do you figure the cost for something like a Sleep Arrow?

That's a tough call, since the sleep spell doesn't affect creatures with more than 4 HD. Isn't there a higher level version of sleep somewhere?
 
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jaults said:
How do you figure the cost for something like a Sleep Arrow?
A Druid in our party would like to make or buy Rusting Sling Bullets (bullets that cast Rusting Grasp when they hit)...

Thanks,
Jason

Well, let's see.

Single use, use-activated
Cost: Spell level x caster level x 50 gp
Example: Potion of cure light wounds

Arrow of Sleep compared to that: Spell level (1) x Caster Level (1) x 50gp = 50 gp. + 47 gp for one +1 magic arrow (1/50th of 2,350). = 97 gp

However, it's: Faint enchantment; CL 5th; Craft Magic Arms and Armor, sleep; Price 132 gp; Cost 69 gp 5 sp + 5 XP.

Hmmm. This leaves 35 gp unnaccounted or. That .7 times the base price for the spell (.7 x 50 - 35). Since Rusting Grasp is a touch spell, I'd make that factor be x2 rather than x1.7

Rusting Grasp = 4th level spell x 7th caster Level x 50g.p. x 2 (teh added factor from above) = 2800 + 47 gp = 2847 gp

Rusting Bolt: This +1 stone sling bullet is unpainted and unremarkable in appearance. If it strikes a foe so that it would normally deal damage, it instead bursts into magical energy that has the same effect as a "Rusting Grasp" spell. Note that it must hit normally, not as a touch attack, and that you can affect the target's armor only, since you cannot "attack a weapon" with a ranged weapon.

Moderate enchantment; CL 7th; Craft Magic Arms and Armor, Rusting Grasp; Price 2847 gp; Cost 1423 gp 5 sp + 142 XP.

Thast should be pretty close, anyway.
 
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This was covered in an issue of dragon a while back. IIRC, it broke down to:

94gp (2350 / 50 arrows * 2) + (SL * CL * K)

K is 50 if SL <= 3 or 100 if SL >= 4.

The cost of the +1 arrow is doubled as it's a secondary non-similar
ability of the item.

Ammunition must be at least +1 before a spell can be embedded.

A Sling Bullet of Rusting Grasp would then cost:
94 + (4 * 7 * 100) = 2897gp
 

Artoomis said:
Single use, use-activated
Cost: Spell level x caster level x 50 gp
Example: Potion of cure light wounds

Artoomis, I don't really think this formula is appropriate for a sling bullet. The formula is more representative of potions, which require a standard action (drinking it) to activate it, while a sling bullet requires no action at all. IMO, potions got their own formula for a reason.
 

Pyrex said:
The cost of the +1 arrow is doubled as it's a secondary non-similar ability of the item.

Actually, secondary non-similar powers aren't doubled in 3.5, instead they have a 50% increase. If this is about 3.0, nevermind.

But anyway, I forgot the cost of the damn arrow. Doh! OK, that would bring my price too...4,240 for a rusting grasp sling bullet. That's better.
 

kreynolds said:
Artoomis, I don't really think this formula is appropriate for a sling bullet. The formula is more representative of potions, which require a standard action (drinking it) to activate it, while a sling bullet requires no action at all. IMO, potions got their own formula for a reason.

Potions do not have their own formula. The formula is for use-activated single-use items, of which potions is one example.
 

Artoomis said:
Potions do not have their own formula.

Don't be like that. I didn't say they did.

Artoomis said:
The formula is for use-activated single-use items, of which potions is one example.

Right, but potions require an action to activate, thus I don't think that formula is representative of an item that _doesn't_ require an action to activate.
 

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