Tide Spirit Shell Lv.1At the beginning of each wave, increases self Turn Meter by 30%. Each time after Sheena takes DMG from a basic attack or an active skill (excluding pursue-and-attack and counterattack), she will counterattack the attacker once. Sheena gains Shield Effect by 60% of self initial Healing Effect (up to 60% Shield Effect can be gained) and increases all allies' ATK by 40% of self initial Healing Effect (up to 40% ATK can be increased).

Tide Spirit Shell Lv.2Venom Waterball also removes 1 layer of a random buff from the target. When [Ocean Spirit Shield] ends or is broken, Sheena will grant the ally 1 layer of [Ocean Spirit Shield] by 60% of her Max HP again. This effect has a 2-turn CD for every ally. When an ally is inflicted with [Imprison], Sheena cleanses all Control Debuffs from self, acts for an extra turn, and refreshes the CD of all her active skills. CD: 1 turn.

Tide Spirit Shell Lv.3For every 1 ally with the [Control] tag deployed, reduces the Skill DMG taken by allies with [Ocean Spirit Shield] by 20%. When 5 allies with the [Control] tag are deployed, all allies will not be pursued and attacked by basic attacks. At the beginning of each wave: 1. Grants all allies 1 layer of [Healing of Ocean Spirit]. 2. Grants all allies [SPD Up II] for 2 turns when casting Pure Azure Waves, starting from the 2nd time the skill is cast. When an ally's turn starts, Sheena grants 1 layer of [Healing of Ocean Spirit] to the ally.

Tide Spirit Shell Lv.1At the beginning of each wave, increases self Turn Meter by 30%. Each time after Sheena takes DMG from a basic attack or an active skill (excluding pursue-and-attack and counterattack), she will counterattack the attacker once. Sheena gains Shield Effect by 60% of self initial Healing Effect (up to 60% Shield Effect can be gained) and increases all allies' ATK by 40% of self initial Healing Effect (up to 40% ATK can be increased).