L5R LCG: A Crimson Offering Dynasty Pack - Rules of Play says:
As the Temptations cycle continues with A Crimson Offering, the third Dynasty Pack in the Temptations cycle for Legend of the Five Rings: The Card Game, every Great Clan is pushed to make more difficult choices with the cards that they receive. The new dire keyword rewards you for walking the line of impermanence, granting your characters powerful new abilities that activate when the character has no fate remaining on it. And like the clans of Rokugan, you’ll face the temptation to include powerful mahō cards in your deck, using blood magic to gain any advantage over your opponent.