When you click on the Npc for the first time it will say  Hello Adventurer, nature is very important and needs to be taken into consideration by all people through out faldon
If not one day the forest will be gone and replaced by buildings if you are willing to take
A step forward for this concept please tell me
Then you either click Oh sure! or Umm bye   
If you click Oh sure! then it will say Great thank you adventurer to help nature we need to fight some animals and pick things from the forest to make the forest a better place you must bring me 50 rodent furs,500 purple dandelions,70 moon flowers,500 water and 30 snake skins
Then you click Ok ill be right back then the window closes
You go get those items and when you bring them to the Npc and  he says  Thank you Adventurer you have helped Nature by what you did I am very grateful for what you have done so I will reward you
Then you click on oh sure
And you can choose from  Lvl 2 Magic Missle or 500 Gold Pieces or any random pre/suf Nature Sword
About the  Nature Sword I was thinking it could be a rapier, broadsword, bastard sword or Viking sword that is a darker green then serpents fang and the special effects or attack stuff could be this
                                                          Nature Sword
                                                              40/40
                                                          Damage: 0-15
                                                         Fast attack
                                                         15% Nature Damage ( I don’t know I just threw that  in there)                                           
                                                           Requirements
                                                             5 levels 
                                                              50 strength
                                                               30stamina
                                                                20Constitution

                                                       Sincerely,
                                                                       Chipmunk/Ian