Aquatica Gratia

Location: Water Storm
Price: N/A (Reward from the 'Firewater in your Veins' quest)
Sellback: 300 Gold
Rarity: Awesome Rarity
Base Damage: 27-33
Description: The gentle rolling of ocean waves is captured forever in this staff. The soft blue glow is reminiscent of the moon's light as it travels down to the bottom of the sea. And though these images are tranquil and soft, the power within the staff is great and thunderous. It will be a boon to those you battle.

Thanks to Dukey and Tendou no Mazo.