Guild Wars 2

So I started working on getting my weaponsmith up to 500 yesterday. In the process of doing the discovery (greatsword blade, greatsword hilt, inscription) I saw that I could put in a blade/hilt/glob of ectoplasm but it required a 4th ingredient. It said there were 7 undiscovered recipes based on the those three ingredients. I didn’t have anything else that would go in the fourth box and haven’t been able to find out what would go in there and/or what it would make. Anyone have any ideas?

They are probably the destroyer weapons, try destroyer loadsstones.

Wiki says destroyer weapons are blade/hilt/inscription/destroyer lodestone.

Will have a look for you in a sec