Saving Throw: Will negates (harmless) Spell Resistance: Yes (harmless)
You place a curse of one creature that causes it to suffer misfortune and lapse in the use of any Craft skill. The subject suffers a -10 competence penalty on any Craft checks and checks that fail by 10 or more may result in serious consequences, such as destruction of all raw materials being worked on, loss of work, or even injury (at the DM's discretion). A casting of bless, crafter's blessing, remove curse, or break enchantment will remove the crafter's curse.
Arcane material component: A piece of rotten wood and a rusty or bent piece of metal.