Greater Belt of Mighty Hurling

Greater Belt of Greater Mighty Hurling (DC 27)
Moderate Transmutation; CL 12th
Slot belt; Price 42,000 gp; Weight 1 lb.
Description
This item functions as the lesser belt of mighty hurling, except it grants a +4 enhancement bonus to Strength and any thrown weapons its wearer hurls are treated as though they had the returning quality. This does not apply to improvised ranged weapons, splash weapons, or weapons the wearer lacks proficiency with. Treat the bonus to Strength as a temporary ability bonus for the first 24 hours the belt is worn.
Construction
Craft Wondrous Item, 1st level transmutation spell, 2nd level animal spell, 2nd level teleportation spell; Cost 21,000 gp, 4,200 craft