Marciana: Marine Study—or 'Swimsuit Marciana' as the community calls the latest summer star—arrived on July 9th via a limited banner. While the swimsuit design has predictably caught every Commander's eye, the real intrigue lies in whether this summer variant actually brings the heat in combat. With skills that scale based on the number of Raptures on screen, and a particularly nasty bite in boss encounters, Marciana: Marine Study is positioning to anchor Iron-code Solo Raids alongside Cinderella. KookminTree has crunched the numbers to see if this unit is worth your gems.

Q. What kind of unit is Marciana: Marine Study?
A. This unit boosts 'Attack' and 'Code Damage' based on the current number of Raptures on the field.

The core skill, 'Penguin Emergency Dispatch', shifts its potency depending on the Rapture count. It starts with a base 'Whistle' buff, stacking up to 5 times. At level 10, each stack grants a 32.73% Attack boost, meaning Marciana: Marine Study can hit a massive 163.65% Attack buff.

Whistle stacks are consumed to trigger an AoE attack if 6 or more Raptures remain for at least one second. These stacks only begin to regenerate once the count drops to 3 or fewer for 5 seconds. Furthermore, when a Rapture appears or dies while the count is 5 or less, a passive 'Code Damage' buff activates. At level 10, this provides a 20.41% boost, essentially equivalent to an extra line of Overload gear.

The first skill, 'Emergency Whistle', triggers at the start of Full Burst and when Marciana: Marine Study uses a Burst Skill. It applies a 'Targeting' debuff to the enemy with the highest Max HP, dealing massive damage. At level 10, it scales to 3,789.25% of final attack, rivaling the burst damage of top-tier units.

The 'Targeting' debuff reduces enemy attack for 10 seconds. If a marked enemy dies, the effect jumps to another random target, creating a clean-up loop. Additionally, every 20 basic attacks deal extra damage if the target is marked as 'High Risk'.

The 'High Risk' status is applied via the 'Penguin Spiral' Burst Skill. Since the debuff specifically targets Electric-code enemies, the unit is effectively confined to Iron-weakness content. It grants a 30.97% 'Code Damage' buff and a 27.45% 'Attack Damage' buff. Combined with the second skill, you are looking at a 51.38% Code Damage increase. For context, the max roll on an Overload gear piece is 29.16%, so this is like equipping nearly two extra pieces of gear for 10 seconds. Aim for a skill priority of 7/7/7, eventually pushing to 10/10/10.

Q. How does Marciana: Marine Study actually perform?
A. Among Iron-code units, the hierarchy is: 'Cinderella > Raven ≥ Marciana: Marine Study > Chisato > Eve'.

Let's look at the raw numbers. We tested against top Iron-code contenders like 'Cinderella: Crystal Wave', 'Chisato', 'Raven', and 'Eve', using a squad of 'Little Mermaid', 'Crown', and 'Nayuta'. The test was conducted at the Union Shooting Range (Electric-code boss, 3-minute battle, fixed stats, auto-battle).

The results place Marciana: Marine Study in third. Cinderella: Crystal Wave is frankly in a league of its own, making direct comparison difficult. Against bosses without parts, Raven performed only marginally worse than Marciana: Marine Study, though Raven would easily pull ahead in multi-part boss fights.

Chisato's 'Defense Ignore' mechanic offers potential depending on the boss, but the SMG weapon type holds it back. Eve, despite also using a rifle, lagged behind in total damage. Even with Eve's own debuffs, it is hard to compete with the 3,000%+ add-on damage and 50% code buff that Marciana: Marine Study provides.

In short, Marciana: Marine Study is a top-tier contender for Iron-code rosters, though its utility is strictly tied to that weakness. Because the Burst debuff targets Electric enemies, you won't get the same value against other elements. Don't expect much in PvP, either; the current Burst 3 meta is crowded, and the low burst generation of the rifle makes it a tough sell. Keep an eye on the official forums for further developments as the community continues to experiment.

Q. Should I pull for Marciana: Marine Study?
A. If you have Cinderella: Crystal Wave and are aiming for top 3% in Iron-code Solo Raids, then yes, at least pull a copy.

As a limited-time unit, missing this window means waiting an entire year. The real headache for new or returning Commanders is the current banner lineup. While Cinderella: Crystal Wave is a must-have, players also have to weigh the value of 'Dorothy: Serendipity' and 'Elegg: Boom & Shock'.

The priority is: 'Cinderella: Crystal Wave > Dorothy: Serendipity > Marciana: Marine Study > Elegg: Boom & Shock'. Cinderella and Dorothy are limited 'Pilgrims' with top-tier performance guarantees. Elegg is strong, but since the upcoming Solo Raid favors Iron-code over Water-code, its priority is lower. Secure a copy of all three if you have the resources, but prioritize accordingly.

Think of Marciana: Marine Study as an essential pickup for your Iron-code Burst 3 roster. Permanent Iron-code units are limited to the likes of Laplace, Yulha, Red Hood, Soda: Twinkling Bunny, Snow White, Sugar, Maxwell, and Milk: Blooming Bunny. Raven, Chisato, and Eve are currently unavailable. Since Laplace and Yulha require 'Treasures' to shine, and Sugar's update isn't until July 23rd, Marciana: Marine Study is your best bet for chasing that top 3% ranking.