“ Do not fear the tides... The waves of destiny shall guide you. „
Mystic Opal Cookie (미스틱오팔 쿠키, misutig-opal kuki) is a Guest Cookie released in the second part of the A Mermaid's Tale update (v4.10),first appearing as an NPC in A Mermaid's Tale Special Episode. She also appears in the Song of the Night Sea Special Episode.
Mystic Opal Cookie is the withdrawn and cryptic sister of 
White Pearl Cookie, 
Crimson Coral Cookie, 
Aquamarine Cookie, and 
Gold Citrine Cookie, once residing in Tearcrown. Her individual power as a Gem Mermaid is control over the surface's weather and future sight.
Currently, she inhabits a cave in the Silent Ocean's Garden of the Queen with the Starlight Mermaids, acting as renowned oracle called the "Gem of the Ocean."
Game Description[]
Born with an opal imbued with the powers of wind and fate, Mystic Opal Cookie is a Gem Mermaid blessed with the love of the 
Almighty Sea. After the Sea Foam Rite, Mystic Opal Cookie has not only acquired the ability to control the weather but also the gift to sense the grand course of destiny slightly ahead of time. Maybe this is why she prefers hiding in a deep-sea cave in solitude...?
Trivia[]
- Mystic Opal Cookie's Appearing Cookies section of A Mermaid's Tale reads as such:
- Mystic Opal Cookie knows that it doesn't make much sense how she can control the weather when she lives underwater. But she says that's exactly why she likes it.
- She sometimes will receive visions of the future, but she rarely shares them with anyone.
- Mystic Opal Cookie almost didn't show up to her own Sea Foam Rite because she doesn't enjoy loud and busy places. Or so they say!
- While she doesn't enjoy the company of other Cookies, Mystic Opal Cookie will still welcome those who visit her cave.
- Mystic Opal Cookie's Appearing Cookies section of Song of the Night Sea reads as such:
- Perhaps, even Mystic Opal Cookie herself wouldn't tell how long she has been hiding in a cave in the Garden of the Queen.
- What could be the reason to remain in the dangerous waters of the Silent Ocean...?
- The Starlight Mermaid Cookies can be pretty meddlesome, yet she won't send them off.
- She awaits the day she can finally reunite with her sisters. If fate permits...
- Although the winds of fate require no intervention, everyone must play their part in due time.
- Mystic Opal Cookie is the first and only character to appear in two separate Special Episodes' Appearing Cookies cast.
- Mystic Opal Cookie shares her Korean voice actress, Heo Yea-eun, with Serious Paladin Trainee and Parfaedia Principal.
- Mystic Opal Cookie's Taiwanese voice actress, Monochrome, also provides the voice of
Olive Cookie.
