You get this really fun racial ability to summon the help of a Snow Wurm, but after every summoning period it dies. It is hard to explain, but this really breaks the immersion factor involving this ability. There are obviously various implausible elements to summoning a wurm out of the ground anywhere you are, but sacrificing those facets of believability for the sake of gameplay is completely understandable. Having your little toothy comrade die after every summon, however, is really sad. I suggest you make him simply sink into the ground until next summoning. Prease!