Q: Dear Sage,
Can a player add a weapon property to a non-weapon wondrous item? For example, can I add the shock property to my quiver of Ehlonna to let it grant that benefit to all the arrows stored in it?
A: Wow, two quiver of Ehlonna questions in the same week’s batch. What are the odds of that?
By definition, the weapon properties are designed only to be added to weapons. Simply adding the shock weapon property to a quiver of Ehlonna doesn’t necessarily mean the quiver now imparts that property to its arrows—by definition, it would apply only to attacks made with the quiver itself, which is pretty ludicrous.
The Sage can certainly imagine a wondrous item that bestows a benefit resembling that of a weapon property—the scabbard of keen edges is a good example—but simply making it exactly the same effect and price would almost certainly be a mistake.
As with any new magic item, the DM must balance the item’s effect and price with similar effects in the game—a quiver that granted the shock property to every arrow it fired is significantly more efficient than simply crafting a batch of +1 shock arrows, and just using the existing “plus equivalent” price would be significantly cheaper than adding the shock property to your bow (since your bow likely has an existing enhancement bonus and/or other properties).
About the Author
The Sage is a mammal classified in the bear family, Ursidae, native to central and southern China. Debate continues as to whether he is truly a bear or more related to the raccoon rather than the bear, or perhaps in a family of his own. When not eating bamboo and answering rules questions, he works under the nom de plume of Andy Collins as an RPG developer in Wizards of the Coast R&D, where his development credits include Complete Mage, Dragon Magic, and the Player's Handbook v.3.5. He can be easily recognized by his large, distinctive black patches around the eyes, ears and on his rotund body.