Why do we need 3 graves to summon skeletons, makes it very annoying to play the class..

The necromancer gem is very scarce on items, some nice amulets drop but it can't be worn as it has no Necro gem in it, A bard or any class that uses both hands are stuck with random chances on drops to enable the class that requires a boss fight to unlock.
Suggestion: Make necromancer gem craftable or transferable or increase the chance on items table to have a
necro gem when necromancer skills enabled, for an instance a bard/ necro ( with staff or necro necklace ), instead of dropping an item with good skill for both classes that does not enable the necro class make it so the game auto generates a necro gem for the item or give it a very high chance of it generating a necro gem, it's very annoying getting a nice item that is unusable or having to swap one class ( stop playing bard ) because the nice items do not enable the other class