"I only have seventy thousand arrows in my spatial quiver, not sure if that will be enough. What if we have to fight one of those titan dragons that the radiant light elves told us fly through elemental planes."
Everyone looked at Gil as he had been explaining the arrows he was bringing. While they were disgusted by the sheer numbers of arrows he possessed, they knew that this was a normal result. Gil was always making arrows even though he didn't need them.
Just imagining the arrows he made while teaching other elves how to make some more advanced arrows for his bow would lead to him having hundreds. Add in the experimentation, and here he would be. Entirely full of arrows for years if he didn't abuse them and waste them.