If this is based on--or at least somehow inspired by--Warcraft's night elves, I'm delighted to see D&D plundering pop culture for ideas, and I say that without any sarcasm intended. If Old Geezer at rpg.net is to be credited (and since he was part of Gary's original group [and responsible for the existences of half-elves and gelatinous cubes!], I think he is), the theft of fun pop culture for the enjoyment of players is nothing new, and in fact has a pedigree extending back to its earliest days. And I endorse the practice, because it's fun for the participants. Something doesn't need to be wholly original to be enjoyable, especially in gaming, which is well more a social activity (i.e., let's get together and have fun as friends) than it is a narrative one (i.e., here is my literary magnum opus with d20s). I request a shifter artifact based on the Sword of Omens, next.