You can also cast this on water (and maybe other liquids inside containers). The liquid must be dragged between containers to retain the spell effects. When cast on water within a [[well]] or a [[fountain]], the refilling of the container does not affect the spell.
When cast on a metal lump, the enchanted lump can be combined with unenchanted lumps to maintain the enchant. Activate the enchanted lump, and combine with others.
This spell decays with the use of the item.