Leviathan Ambergris

The Leviathan Ambergris is a Hardmode, Expert Mode-exclusive accessory obtained from the Treasure Bag dropped by the Leviathan and Anahita. It leaves poisonous seawater as the player moves and grants a boosts to damage, defense, and movement speed while submerged in water. If the player is not submerged in liquid, they will receive 5% increased damage and damage reduction. If the player is damaged while they are submerged in liquid, they gain an aura around themselves for a short time which damages nearby enemies.

Trivia

 * Ambergris is a waxy substance produced in the digestive systems of whales. The substance can be sold for up to thousands of dollars due to its high value in the perfume industry.