Make NPC exclusive model items available

Now, I recently got a phantom of mogdrogen ’s hood from gdstash and enjoyed cosplaying.
However, since this was obtained fraudulently using an external tool, it is not without the possibility of being deleted.
So I want an opportunity to get these NPC-only model items. For example, you can get it as a reward for a related NPC special quest.
If you don’t want to give us exactly the same thing as an NPC, you can change the Texture. (For example, Olive Green color mogdrogen ’s hood works well with Nature’s Avenger and Wildheart Vanguard.)