Force of Will The Moon Priestess Returns Play Mat LIMITED EDITION PLAYMAT. Force of Will, a hit in Japan as a strategic and very exiting card game, finally arrived in USA in its English version! In this game players fight with the Ruler that is your avatar. This card game attracts many players in the world with sophisticated game system and beautiful artwork! You summon the Resonator by your Force of Will then fight against your opponent player. With high strategy, your Ruler leads you to the victory! They told of two prophecies about the magic stones.The first was that there were side effects for those who gained will through the use of these stones.The second prophecy was of a catastrophic disaster that would arise once the moon turns red. The Moon Priestess Returns is a continuation of the Grimm Cluster block cycle: Kaguya, the Immortal Princess, returns from the moon after finishing preparations to fight against the false god. New V Will, Moon Will, more. This the official playmat from the G3 Moon Priestess booster series, very high quality with thick custom sewn edging.