Well - a good if predictable story, but ... consider one thing: the average PCs sees no benefit in hurting any of the above animals, unless the animal itself attacks him, and then, he will claim that the GM is hosing him. Thus, while the story is interesting, the playability of the item is low - I would avoid giving this to any of my PCs. Go to Comment
There's more than one way to hurt an animal. Deforestation could be considered hurting these animals, as could overhunting/overfishing any of their food sources. Also, perhaps a better requirement is that the wielder is required to act in the animal's best interest. For instance, he must stop and aid a wounded porcupine/eage/cobra, even if he's in a hurry. However, it seems a bit powerful to be given to anybody. It automatically kills anything its shot at? (except things shielded by magic). And it has an unlimited number of shots? I think it should be a bit less potent. Wearing these on one's chest doesn't seem very safe. And finally, I don't think that cobras, porcupines, and eagles live in the same regions. Go to Comment
Seems a touch incomplete...
Perhaps you should add some of the uses of the Ahal paste- I imagine that house builders might find it of some use (workers have buckets of it, chewing and spitting out the paste as mortar). The use in battle is an interesting idea, but I don't see how it would stop an enemy warrior, unless the paste was in their eyes or nose, or possibly gumming up some hinge in their armor or something.