End of the Line

1. R1 Triggers the Flowrider effect after using an Elemental Skill, dealing 80% ATK as AoE DMG upon hitting an opponent with an attack. Flowrider will be removed after 15s or after causing 3 instances of AoE DMG. Only 1 instance of AoE DMG can be caused every 2s in this way. Flowrider can be triggered once every 12s.
2. R2 Triggers the Flowrider effect after using an Elemental Skill, dealing 100% ATK as AoE DMG upon hitting an opponent with an attack. Flowrider will be removed after 15s or after causing 3 instances of AoE DMG. Only 1 instance of AoE DMG can be caused every 2s in this way. Flowrider can be triggered once every 12s.
3. R3 Triggers the Flowrider effect after using an Elemental Skill, dealing 120% ATK as AoE DMG upon hitting an opponent with an attack. Flowrider will be removed after 15s or after causing 3 instances of AoE DMG. Only 1 instance of AoE DMG can be caused every 2s in this way. Flowrider can be triggered once every 12s.
4. R4 Triggers the Flowrider effect after using an Elemental Skill, dealing 140% ATK as AoE DMG upon hitting an opponent with an attack. Flowrider will be removed after 15s or after causing 3 instances of AoE DMG. Only 1 instance of AoE DMG can be caused every 2s in this way. Flowrider can be triggered once every 12s.
5. R5 Triggers the Flowrider effect after using an Elemental Skill, dealing 160% ATK as AoE DMG upon hitting an opponent with an attack. Flowrider will be removed after 15s or after causing 3 instances of AoE DMG. Only 1 instance of AoE DMG can be caused every 2s in this way. Flowrider can be triggered once every 12s.

Lore

This seems to be a now-extinct fish. Its body is sufficiently elastic that a string may be attached to it to let it serve as a bow.