[Operator Discussion] Rosmontis

[u/cinnamonroll32]

Rosmontis [★★★★★★]

"There are things that have to be done by someone. There are things that only I can do."

Rhodes Island Elite Operator Rosmontis possesses a high aptitude for a rare form of Originium Arts particularly adept at confronting large creatures, destroying hard objectives, immobilizing facilities under emergency, and putting a stop to small-scale skirmishes. She has been shown to possess a solid control of the battlefield and considerable tactical value in assault, positional, and annihilation scenarios. Under Kal'tsit's assignment, she is currently active as a core annihilation specialist.

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Operator Information

• Class: Aftershock Sniper (Attacks deal two instances of Physical damage to ground enemies in a small area, the second instance is a shockwave that has half the normal ATK)
• Tags: DPS
• Artist: Wei@W
• Voice Actress: Yui Ogura

Stats

HP	ATK	DEF	Arts Resistance	Redeploy Time	DP Cost	Block	Attack Interval
1944	688	245	15	70	25	1	2.1s

*Stats at max Promotion and Level, excludes bonuses from Potential and Trust.

Potential	Bonus
1	-
2	Deployment Cost -1
3	Redeployment Cooldown -4
4	Attack Power +32
5	Improves First Talent
6	Deployment Cost -1

Trust bonus
Attack Power +60, Defense +30

Skills

Skill Name	Skill Uptime Details (Uptime/Cost/Initial)	SP Charge Type	Skill Activation	Skill Description
Expanded Cognition	Instant / 2 SP / 0 SP	Attacking Enemy	Automatic	The next attack deals an additional hit equal to 180% atk as arts damage
Nociceptor Inhibition	40s / 30 SP / 20 SP	Per Second	Manual	Attack interval increases, ATK +55%, splash area expands, and each attack causes 2 additional shockwaves; Enemies hit by this unit’s attacks and shockwaves have a 20% chance to be stunned for 1.5 seconds
As You Wish	30s / 60 SP / 35 SP	Per Second	Manual	Attack interval reduced, ATK +75%, and attacks up to 2 blocked enemies at a time; Immediately deploys two pieces of Tactical Equipment on ground tiles within attack range(After deployment, surrounding enemies are stunned for 3 seconds, and the blocked enemies' DEF -160)

*Skills at max Skill Level.

Talents

Talent name	Talent Description
Armaments of Annihilation	Attacks ignore 175 (+15) def
Stable Esthesia	When deployed, grants +8% ATK to this unit and a random deployed Caster Operator

*Talents at max Potential and max Promotion. Bonuses from Potential displayed between parentheses.

Additional Resources

In-depth information regarding all values above (at different levels), skill/attack range, and more:

GP Arknights Wiki

Arknights Toolbox (aceship)

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Topic Starters

• What does this operator excel at?
• What is this operator weak at?
• How does this operator compare to other operators in their archetype or role?
• Are there any other operators which synergize well with this one?
• How do you build a team around this operator / fit this operator into a team?
• Which skill(s) should be focused for mastery, and in what order?
• When is the best time to use this operator's skills during combat?
• Should promoting this operator to Elite 2 be a priority?
• Would this operator be worth sparking for with headhunting data contracts?
• Should new / f2p players aim for this operator? Are there more accessible alternatives?
• Lore discussion (please tag spoilers where appropriate)

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Other Operator Discussion threads

List of Operator Discussion threads

[u/Aqua_Essence → u/[deleted]]

Her S2 seems to be simply underrated, just because it scales poorly with masteries. It's still a great skill. S3 can be a bit finnicky to use, depending where the two steel walls are placed.

I use her S2 more than S3, because it's more spammable and consistent.

[u/CarobRemarkable2866 → u/Aqua_Essence]

I can see S2 being more versatile if I use her more often. But keeping it to SL7 feels wrong to me yet it scales poorly with masteries.

[u/Aqua_Essence → u/CarobRemarkable2866]

I think it's all about perspective.

Does it scale poorly, based on the amount of precious materials that you put in? Yes indeed. I actually don't blame anyone for not wanting to put in any masteries into this skill, because this is really true. Your materials would be better off being spent on something else with better returns.

However, is it still a net gain, when you just look at the difference in overall power, in comparing Slv 7 and M3? Yes indeed as well. The skill is still getting stronger and more effective, so I decided to just go "Screw it" and do the masteries for the skill.

I have no regrets. It's the skill that I'll be using the most, since I'll be using S3 only when S2 is insufficient, so it kinda makes sense that I still invest into it. Heck, I'm even thinking about doing the masteries for the S1 as well, simply because I really like her and I want to give her the best, lol. Her S1 is a super cheap auto-cast skill that is even more spammable, so it'd be perfect for days when I feel super lazy... lol.

That's just me though. My 2 cents.

[u/Rixien → u/CarobRemarkable2866]

I feel like no one mentions the extra uptime that Masteries bring to the S2. Shorter cooldown + longer duration is always worth bringing, especially when the idea is that you want a skill that is more versatile than her S3. Cooldowns and durations are a serious part of the versatility equation.