This Ruler can J-activate into Triton, the Prince of Ocean .
Oathkeeper of the Sacred Sea
Oathkeeper of the Sacred Sea-0
Attribute: Water Wa
Card Type: Ruler
Race: Mermaid
Abilities: [J-Activate] Banish two cards in your chant-standby area.

[Activate] Pay Wa Void 3, Rest : Gain control of target resonator until end of turn.

Sets and Rarity:
[Valhalla Cluster] The Dawn of Valhalla
(1-097 — Rare)