Crystal Spiders are docile upon contact, but when hit, they shuffle through the snow towards the player (or whatever hit it) and curl into a ball, then roll at a high speed to knock them several blocks into the air. They are invulnerable when curled, and they must hit them before they attack again. They have 15 <3 and the roll attack does 3 <3. When killed, they drop 0-3 Blue Snowballs and 0-2 Ice Shards.
Crystal Spiders roam only in Icengard and The Descent . They spawn at rates of 30% every 6x6 area of Blue Snow.