Author has no idea what speed of light is. Assuming an average arrow weight of 18 gm ,and assuming it's actually moving at the speed of light like the author said. then the relativistic mass of that arrow is m = m0/sqrt(1 - V2/C2) = 18/sqrt(1 - 1) = ∞. Then it's has Kinetic Energy = mc2 - m0 c2 = ∞. which would mean that arrow has enough energy to destroy the universe. but it still can't scratch the silver diamond wolf's "magic" shield. even if it was only going at 99.997% the speed of light that it would still have more energy than the TSAR BOMBA. Actually it would need to go 7% the speed of light to kill everything in 220m radius.