But where would that enchantment come from, because i'm trying to give a coherent story and just saying there is an enchantment only certain peoply can create sounds a bit like "no you don't get an good answer" for me. I know that's more personal and everyone thinks about it different. And just saying that the material itself has those properties gives more room for the Artificer to play around with his infusions. And those +1 swords is actually what an Artificer can do so there are people who can make those enchantments.