I've seen the amiibo go for higher prices. I was originally going to get Undertale, but now that I know I can get this for just five more bucks! Undertale may have amazing characters and a creative fighting system, but Shovel Knight has butt mode! Also, what's the plague of shadows, treasure trove, and specter of torment? I've heard the names a lot, but I don't actually know what they are.