I need alittle Assistance with a Calculation

[Valicor]

Okay, Heres the problem, I am not 100% sure the rules for magic item prices when it comes to constructing new items or adding onto items. So I was hopeing someone would be able to help me out here.

1. I have a +4 amulet of Health, and would like to add a +2 wisdom bonus to this item, how much would that cost?

2. How much would it cost to put 3/day at will use of true strike on a +4 weapon?

If your able to help me out, would you be able to supply the formula's used please, so I can explain them to my DM.

Thanks from Val

 

[kreynolds]

Okay, Heres the problem, I am not 100% sure the rules for magic item prices when it comes to constructing new items or adding onto items. So I was hopeing someone would be able to help me out here.

Keep in mind this is just a guideline. Your DM will no doubt want to tweak the prices.

1. I have a +4 amulet of Health, and would like to add a +2 wisdom bonus to this item, how much would that cost?

Amulet Cost Breakdown
-------------------------------------------
+4 Constitution = 16,000gp (bonus squared x 1,000gp)
+2 Wisdom = 4,000gp x 2 (second similar power on slotted item) = 8,000gp (bonus squared x 1,000gp)
Total = 24,000gp

Note: Unless you're in a low magic campaign, this price is just fine. It shouldn't need to be tweaked at all, neither up nor down.

2. How much would it cost to put 3/day at will use of true strike on a +4 weapon?

True Strike Weapon Addon Cost Breakdown
-------------------------------------------
True Strike 3/day = 1,250gp x 2 (secondary power on weapon)(spell level <1> x caster level <1> x 2,000gp) = 2,500gp
Total = 2,500gp

Note: No doubt, your DM will want to tweak this price, but this is the base and a good place to start. Personally, I don't really have a problem with this price, since it's a standard action to activate, so if he suggests more than 4,000gp, I wouldn't bother if I were you. If, however, you want this activated as a free action, good luck.

Also, I've found a pretty good way of balancing these costs out in regards to placing them on a weapon. To create a +4 weapon, a caster must be at least 12th level (level = 3 x bonus of weapon). In cases like True Strike, I've found that using the caster level requirement mentioned previously in place of the caster level in the formula works pretty good. So, it would look like this...

1 (spell level) x 12 (caster level) x 2,000gp (use-activated, standard action) = 24,000gp x 2 (secondary power on weapon) = 48,000gp / 1.6 (3/day) = 30,000gp

If your able to help me out, would you be able to supply the formula's used please, so I can explain them to my DM.

Let me know if you need more info.

 

[Valicor]

Thxs

I thought it would be 8k to add the wisdom modifier. to the amulet. My DM lets alot go, so maybe i'll get the truestrike. If you wanna help me out some more go over to general disscusiion and vote on what feat i should take next.

*Note for those who point out him having an exotic prof, focus, and specilization for is cleric and templar abilities, it was specially grantd by the DM.*

http://enworld.cyberstreet.com/showthread.php?s=&threadid=17408

 

[Piratecat]

Kreynolds, nice neat breakdown of the costs. I like.

True Strike Weapon Addon Cost Breakdown
-------------------------------------------
True Strike 3/day = 1,250gp x 2 (secondary power on weapon)(spell level <1> x caster level <1> x 2,000gp) = 2,500gp
Total = 2,500gp

where does the 1250 gp come from if it is 1x1x2000?

For quickened true strike, I think you could raise spell level to 5 and caster level to 9th, in order to take quicken into account.

 

[kreynolds]

Kreynolds, nice neat breakdown of the costs. I like.

Thanks. It's a hobby.

where does the 1250 gp come from if it is 1x1x2000?

Yes. Your formula is correct, but it's only useable 3/day. So, it's 2,000gp / 1.6 (5/3).

For quickened true strike, I think you could raise spell level to 4 and caster level to 7th, in order to take quicken into account.

That's true, but I always assume that a power like this on a weapon is a standard action. True Strike is awfully powerful, and requiring a standard action helps to balance it out, though I still tweak the price a bit.

Also, I edited my post to reflect one of the formulas that I use for special weapon properties.

 

[Valicor]

Kreynolds, nice neat breakdown of the costs. I like.

where does the 1250 gp come from if it is 1x1x2000?

For quickened true strike, I think you could raise spell level to 4 and caster level to 7th, in order to take quicken into account.

Good question since I was hopeign for an at will ability, which if I'm not mistaken is free action to use correct?

 

[Crothian]

Quickened true strike would be level 5 (1st level +4 for the meta magic) and need to be cast by at least a 9th level spellcaster.

Edit: Tired typing mistakes

 

[kreynolds]

Good question since I was hopeign for an at will ability, which if I'm not mistaken is free action to use correct?

An at will ability is generally a free action, unless stated otherwise. You have a couple options on calculating the price. The formula I used above in orange is the one that I use for special weapon properties. Here's another, but I've found that it requires heavy cost tweaking in the case of True Strike. YMMV.

5 (spell level: 1 +4 <quickened>) x 9 (caster level) x 2,000gp = 90,000 / 1.6 (3/day) = 56,250 x 2 (secondary power on weapon) = 112,500gp.

As you can see, the price is rediculously high and neads heavy tweaking.

EDIT: Formula correction.

 

[Crothian]

An at will ability is generally a free action, unless stated otherwise. You have a couple options on calculating the price. The formula I used above in orange is the one that I use for special weapon properties. Here's another, but I've found that it requires heavy cost tweaking in the case of True Strike. YMMV.

5 (spell level: 1 +4 <quickened>) x 7 (caster level) x 2,000gp = 70,000 / 1.6 (3/day) = 43,750 x 2 (secondary power on weapon) = 87,500gp.

As you can see, the price is rediculously high and neads heavy tweaking.

Shouldn't that be caster level 9 to be able to have a 5th level spell slot?

 

[kreynolds]

Shouldn't that be caster level 9 to be able to have a 5th level spell slot?

Yep. I just fixed it.

See why I don't use that formula?