As the water goddess of the island, Raina's responsibility is to purify and protect the water flowing through the island. She once used ancient magic to cleanse the water of impurities, but over the millennia, she found that a carbon filter works just as well. Once she gets off the island, she plans to market and sell her own line of premium bottled water.
Each mastery level adds another card to the cardpool for defeating Raina. Each of the bronze, silver, and gold mastery levels unlocks a new card, while it takes all three diamond and onyx levels to unlock a single card.