Mast Early Analysis

Still a Smug brat with pinchable cheeks


Besides looking like a smug brat with a pinchable cheek. She looks like a battleship for a reason! Mast brings a rather unique kit to the table which can see some current and future use.

Basic Info

  • Skill 1: Pirate’s Grit
  • Skill 2: Pirate’s Sight
  • Burst: Sail Through The Tempest!
    Cooldown: 20s
  • Rarity: SSR
  • Burst: II
  • Weapon: SMG
  • Class: Supporter
  • Element: Electric
  • Manufacturer: Elysion
  • Squad: Aegis
  • SMG name: Ferocity

Skill 1: Pirate’s Grit

Note: Assume all skill levels are 10

Activates when Crit attack hits 2 time(s). Affects the target(s).
Sea Breeze: DEF 1.9% of the caster’s DEF, stacks up to 50 time(s) and lasts for 3 sec.
Activates when HP falls below 70%.
Affects self and 2 ally unit(s) with the highest ATK (except caster).
Critical Damage ▲ 50.94% continuously.
Activates when entering battle.

An interesting skill. I’ll talk more about about the def reduction. At max stacks, this would almost equal to 100% def reduction of Casters def, meaning the higher Mast’s def is, the more def is reduced. How does translate to damage?

it’s simply ATK – Def when hitting an enemy then applying all further multipliers. if we take the ratio’s of supporters defense values to attackers, it can be compared to be a +15%-20% attack boost, although this will vary more depending on the difference between the investment difference for Mast and attacker Nikke’s. This Includes dupes, gear equipment, Overload Equipment and etc.

However, if the defense is already at 0, the def values does NOT go negative, meaning her defense shred loses value if the target’s def is already low in the first place. An easy place to test this is in firing range where def of raptures are pretty much 0.

This skill does not account for Increased def buffs during battle. It strictly takes her base defense values only, this means Defense rolls from overloaded equipment are not accounted for.

The Critical damage below 70% HP will be explained further in below section

Note: Stacks are enemy based, and not applied on self. So she would have a impossible time to stack Sea breeze on multiple enemies.

Skill 2: Pirate’s Sight

Activates when entering battle.
Affects self and 2 ally unit(s) with the highest ATK (except caster).
Critical Rate ▲ 23.56% for 30 sec.

An Unfortunate skill. a great buff that is severely limited by its 30s timer. Because of this fact, this really limits her potential as despite giving rather good Crit damage buffs. Now we’re very limited to low Crit rate for the rest of the battle unless paired with a Nikke that has skills that increase Crit rate. Hence, limiting her flexibility as well.

Burst: Sail Through The Tempest!

Affects self and 2 ally unit(s) with the highest ATK (except caster).
Max HP ▲ 86.2% of the caster’s Max HP without restoring HP, lasts for 7 sec.
Critical Damage ▲ 25.19% for 7 sec
Affects the target(s) afflicted with Sea Breeze.
Storm: Deals 4.52% of final ATK as damage.
Mirrors the stack count of Sea Breeze every l sec for 7 sec.

Spicy part of her kit. The max HP boost without healing is rather interesting wording, because of this we can assume that she is able to reduce her own current hp to <70% (skill 1 critical damage proc) after Max HP buff for 7s every time she bursts. Therefore, her skill 1 should always be active during the first 7s of full burst.

To Clarify on this, let’s say we have a 1,000,000/1,000,000 HP Mast. We proc her burst. Now we have an extra 80% of HP pool without healing it, therefore it would be now 1,000,000/1,800,000 HP, which is currently below 70% of current hp.

This is also notable on units such as Scarlet and Guillotine as both units receive offensive buffs when under a certain HP threshold.

The burst itself also has a pretty high multiplier. So if we have 50 stacks of sea breeze, the damage for the burst would be 4.52% x 50 x 7 (seconds). This would total up to 1,582% total burst damage, which is pretty high for a burst 2.

However there is an on-going bug (?) where units with Max HP threshold buffs (Noir, Alice) that are affected by the max HP buff. These Nikke’s Permanently lose their buffs unless healed with at least an instance of damage after burst or healed above HP buff threshold during burst. This means that you need to run any sort of healer to Proc their buffs again.

The opposite does not hold true. For example if <50% HP gives Crit rate, and the max HP buff duration is over, the Crit rate buff does not remain.

Possible Use Cases


I do not see Mast working in campaign in any mob wave scenario. She does not have burst generation capabilities which is extremely important for a b2 unit for campaign. Her Crit rate buff lasts 30s which is not enough to clear campaign stages if playing under medium deficits, let alone large amounts. Lastly, since most targets move around, and there is multiple scenarios where there’s down time (no enemies on screen) her stacks would simply disappear. Even in chapter bosses, her use won’t be good either at High CP deficits. As her Defense would also be nerfed according to CP deficit Penalty. Which greatly diminishes its value.


Her Crit buff seems great to start a round with, but it comes at a huge cost of gimped team burst generation. We don’t start with the Crit damage buffs either as we need to burst or hope mast gets targeted but doesn’t immediately die so the attackers can benefit from Crit damage. But there are a good amount of b2’s that can offer table-turning abilities instead of simply adding more damage at the cost of burst generation.

Special Interception | Union Raid | Solo Raid

Here is where she shines a bit more, her def down is a pretty good team DPS gain and so is her critical buffs. However a team with mast needs a lot to work. Firstly we need Crit rate as after her 30s is done, she loses a lot of value, the only unit that provide team Crit rate is Volume which luckily also fills the role of cool down reduction. We can put any offensive attackers theoretically, but there are two units in mind that would take advantage of Mast’s burst, Specifically the MAX HP part.

With those Nikke’s being Scarlet and Guillotine. When Scarlet bursts at <50%, she gets additional Crit rate, While Guillotine’s Attack increases the lower her HP is. Secondly we need a taunter/ tank to prevent the two from dying, which would be noise. Now we have a perfect Electric based team for Solo/Union raid who are weak to the element.

In theory, she can be used with any team, and she can just be used just like any ordinary b2 buffer. However the issue with this is we already have other units that can do much better and is much more flexible (Novel, Blanc w/ Noir) and would compete with others (Viper, Guilty, Dolla w/ Miranda).


Not to mention, Crit damage in the damage formula is in a slightly bad spot. It does not directly multiply damage as it is put in a bracket of other variables, and those are

Final ATK x (All variables listed below)

  • Core hit (2x -2.5x damage depending on weapon)
  • Full burst (1.5x damage)
  • Weapon effectiveness range (1.3x Damage)
  • base crit damage (1.5x Damage) + Additional crit damage buffs

As you can see, Crit Damage gets diluted pretty hard. Units with high innate Crit damage and can reliably hit core (MG’s) will not be a very good pair with Mast, more notably Modernia. Pitting Mast against enemy raptures with an easily hit core would also dilute her value, when a attack buffer or damage taken up debuffer would be of much greater value.

However, she does hold one unique Niche for special interception. Snow white one shot comps ✨✨.

Team Comp Ideas

Volume team

For reasons stated earlier. Primarily for Solo raid and Union raid usage.

Helm Team

Note: Volume can be easily replaced by Liter

Now, hear me out. This team is rather situational, however it may work on bosses that do immense burst damage (Bowtie, Harvester, etc) especially at high CP deficit where these bosses are able to one shot your units. Having Mast temporarily increase their Max HP while Helm will heal them up to “full” and make them makeshift tanks for a few moments. Still not the best option, but it is something to keep in mind. Helm also increases normal attack Crit Rate on last bullet, which is a pretty good bonus.

P.S: If wanting to use mast as a normal b2 offensive support without any special teams, that is perfectly fine as well. She does fill a good job being a simple damage buff unit in the b2 slot. Simply just use your normal boss killing team and slap Mast in there. Just do note that she would not be as impactful as Novel or Blanc if you do have them ready.


  • Crit damage for days
  • 20s Cooldown
  • Good damage on her burst
  • Pretty good Defense shred values
  • Would accidentally stumble into treasure


  • Crit damage in the damage formula is in a tough spot
  • Needs teams with high Crit rate and against bosses with no cores/ Paired with Nikke’s who have trouble hitting cores to fully take advantage of her kit
  • Extremely painful for campaign usage and mid arena usage
  • Currently bugged
  • Can’t ride this ship

Should You Pull

As a f2p, no. There are burst two units that are much more flexible than her and do better. However as a spender who is interested in Solo Raids or Union raids, she can see staple usage in teams 3-5.

But, you’re always free to pull who you want to, she’s a ship. And that’s cool.

Temporary Rating


Skill Priority

Mast745~Skill 1 has pretty good scaling for crit damage, with the side of def shred
Skill 2 is only 30s, 1/6th uptime in a boss fight, not recommended to raise at higher levels.
Burst level is entirely dependent on how much Max HP value you need to reach certain HP thresholds for units. Level as needed


  1. for a Snow White 1 shot team (looking at that Train), would Mast rival Blanc for a B2 slot or would Blanc’s dmg taken debuff be more effective, for the typical Miranda/Neon/Maxwell/Snow White composition?

  2. Thanks for the analysis, since she will be avaliable whitelist after the event…. skip. saving for next summer units and mileage for nier. f2p plans guys!!!

  3. I skipped her for Helm and Anis but luckily just got her from opening gold mold, thank you so much for the analysis

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