Collectible Creatures with a Twist. Kuroba is a new way to play rock, paper, scissors! Select your play strategy and battle with your friends or train with your own practice cube! The rarest of all Kuroba, this Ice Kuro is an unattainable target, nearly impossible to catch, and fit with a magical horn that can deflect any attack. In fact, the only way to actually see a Frozacorn is by the light of the moon and in the reflection of a pool of water. Uses it's magical horn to deflect any attack.