Lyre of Building Production

[thomas nelson]

RAW wrote:

TThe lyre is also useful with respect to building. Once a week, its strings can be strummed so as to produce chords that magically construct buildings, mines, tunnels, ditches, etc. The effect produced in 30 minutes of playing is equal to the work of 100 humans laboring for 3 days. Each hour after the first, a character playing the lyre must make a DC 18 Perform (string instruments) check. If it fails, she must stop and cannot play the lyre again for this purpose until a week has passed.

As no modifiers are mentioned I have no choice to assume that this is a 100 people with no skill ranks, masterwork tools, beneficial feats etc. This would be 100 unskilled workers taking 10 on a untrained craft check with a +0 or 1000 gp of production per hour of playing.

Here is where things get hairy, only the most basic items are a DC 10 craft check, which means if you want anything more difficult your magic workers have to take 20, which divides your production by 20 to 50 gp per hour of playing.

Am I reading this correctly?

[Abraham spalding]

It doesn't state that the laborers are trained or untrained so assuming one or the other becomes much more difficult.

Also the laborers aren't actually rolling craft checks -- instead they are providing aid another for the person that is crafting the building. As such the overseer makes his check with the taking of 10 for each laborer giving him a +2 on his check.

The reason for this is the time it would take to craft other wise -- much longer that actually is needed. Having +1998 to your check really helps speed up the process.