Xelriss

This ancient green dragon was found by the party in the Feywild. She went into hiding several thousand years ago, during the war between mortals and dragons because she was pregnant. She initially threatened the party, but with some clever persuading, they convinced her to allow them to attempt to ressurrect one of her eggs. Through the use of magic and a revitalizing agent they brought one of her children back to life, gaining a powerful ally in the process.