Transfiguring Touch

You create an alchemical residue on your hands that gradually converts a touched, unattended, non-magical object into iron, paper, or wood (your choice). The spell converts at most 1 cubic foot of material per caster level you have; if the object is larger than the maximum volume, the transfiguration stops once that amount of matter has been converted. If your caster level is at least 14th, you can opt to create lead. If your caster level is at least 19th, you can opt to create precious metals.

If you create a precious metal, you must use an equivalent value of alchemical reagents as a material component (5 sp per pound of copper, 5 gp per pound of silver, 50 gp per pound of gold, 500 gp per pound of platinum).