Storm Over Rivayle 10 card pack bundles are available in the Shop for 1000 crystals each from post-maintenance October 28 to 7:00 a.m., November 3 (PT). The tenth pack has a guaranteed legendary card. Plus, you will receive 20 Storm Over Rivayle card pack points for each bundle purchased.
Storm Over Rivayle 10 card pack bundles can be purchased from Shop > Buy Cards > Buy Packs. They can be purchased up to 3 times per account. Draw rates can be checked from the card pack purchase screen.