They have the same charm slots. Both ammy has 4 charms. The ammy is from Holy Weapon quest. I think that I will take the first amulet with 100 mana and deadly disc skill. One reason is that demonic aide is very slow at killing monsters. Also Gurding aura doesn't help much if you got surrounded by monsters. Deadly disc is good because monster can't resist them and you can cast alot of disc with that 100 mana. Anyway, thanks for the reply.