A rune in Diablo 2: LoD, noted for being damn near impossible to find. Renders any item into which it is socketed indestructable. Usefulness, except as a trading item was diminished in the 1.09 patch, when socketing a zod into something would reduce the durability of the item to zero. Supposedly, the reason this was discovered in 1.09 was that Blizzard managed to get a patch out before someone could find one. Yes, they are that rare, or at least seem to be.These can go for many dozens of SoJs, and even dozens of real-life dollars.
"Man I'm tired. I spent five hours straight doing cow runs looking for a Zod rune."