I need some help to understand sigils before I waste a lot of gold. It says that you cannot stack sigils of the same type. I found on the wiki a listing of sigils identified by type. About the "Stacking" part, what does this mean exactly. A weapon set has 2 sigils. 2 weapon sets have 4 sigils. 2 underwater weapons have 4 sigils. So, I can have 8 sigils on weapons maximum at a time. I can equip at most one weapon set at a time (2 sigils). How does the type limitation fit into this? Does it mean only one of a type in a weapon set? Can I have one of a type in a weapon set and one of the same type in the other weapon set? Any clarification of this will be greatly appreciated.