Arknights Nasti Guide: Is She Worth Pulling?

Alexa Hunter

May 18, 2026

Hello Doctors! Welcome to our Nasti Build Guide for Arknights. This Operator guide covers everything you need to know about Rhine Lab's chief engineer, including her unique high ground tile mechanics, Support Device playstyle, talent breakdowns, skill upgrade priorities, module recommendations, and a clear verdict on whether she's worth pulling for your roster.

Planning to obtain Nasti? Try LootBar's discounted and secure Arknights top-up!

Nasti

6 Star Operator Details
	Rarity	6★ Standard
	Class	Supporter - Artificer
	Tag	Support, Defense
	Block	2
	Role	Terrain Manipulation / Ranged Support

Nasti Overview

Nasti is a 6-star Artificer Supporter and director of Rhine Lab's Engineering Section, bringing her construction expertise directly onto the battlefield. Deploying her grants access to Support Devices whose type and behavior shift depending on her active skill - Quality Inspectors that reinforce defenders, Site Supervisors that rapidly charge an Operator's SP and shield them with a Barrier, or Emergency Support Teams that can be assembled into a fully functioning high ground platform anywhere on the map. Once two Emergency Support Teams charge each other to completion, the platform transforms into a deployable tile for ranged Operators, granting them ATK and HP buffs that grow stronger with each upgrade, and at full power, the platform remains on the field even after Nasti herself retreats. Whenever a ranged enemy appears, her passive Sanctuary buff extends to every Operator on high ground, and both they and Nasti begin recovering SP passively every six seconds.

Nasti Talents

Talent 1 - Construction Ahead (Available from base, improves at E1 and E2)

When deployed, Nasti carries a stock of Support Devices whose type is determined by her active skill. At base, she carries 2 devices but can only deploy 1 at a time. At Elite 1, she can deploy up to 2 simultaneously, and at Elite 2, she carries 3 devices in total. Each device is placed on any deployable tile and provides passive effects to the Operator in front of it, with the specific buff depending on which skill is equipped: DEF reinforcement with S1, SP charging with S2, or platform construction with S3.

Talent 2 - Safety First (Unlocked at Elite 2)

Nasti permanently gains 10% Sanctuary for herself. However, the moment a ranged enemy appears on the map, the effect upgrades — Nasti and every Operator currently on a high ground tile instead receive 15% Sanctuary (up to 18% with higher Potential), and all of them begin passively recovering 1 SP every 6 seconds. This upgraded state persists even after the ranged enemy is eliminated. In practice, this makes Nasti a quiet but consistent SP engine for high ground Operators, while also softening the chip damage that ranged enemies tend to dish out, a combination that pairs especially well with powerful ranged units that benefit most from staying alive and cycling their skills faster.

Nasti Skill Priority

Below are the skill upgrade and Mastery priorities for Nasti in Arknights:

Skill	Priority
S3 - Roosting Grounds	★★★★★ (Highest)
S2 - "Execute	★★★ (Situational)
S1 - "Fortify"	★★ (Low)

Get all three skills to Level 7 first before investing in any Mastery. Nasti is notably light on Mastery dependency - she only needs Elite 2 to start functioning as a high ground tile builder, and her S3's core value comes online regardless of Mastery level. That said, S3 Masteries do offer meaningful buffs to units placed on the platform, so they're worth pursuing once your other priorities are covered.

S3 - Roosting Grounds (M3) - (Best Choice)

Roosting Grounds is the entire reason you bring Nasti to a stage; it's the only skill in the game that creates a deployable high-ground tile anywhere on the map. The platform builds as two Emergency Support Team devices charge each other, granting the unit on top ATK and HP buffs that double at full upgrade. Crucially, it persists even after Nasti retreats. Mastery improves the buff from +15% to +20% per stack at M3, which doubles on a fully upgraded platform, a meaningful gain for any high-value unit you place on it.

S2 - "Execute" (M1 Breakpoint, M3 for Advanced Use) - (Situational)

Execute turns Site Supervisor devices into a fast SP battery and Barrier source. While inactive, devices recover HP; when activated, that stored HP converts into SP and a Barrier for the Operator in front. The fuller the device, the more SP it delivers. There's a key breakpoint at S2M1 that reduces the wind-up cost from 6 SP to 5 SP, and S2M3 notably improves the Barrier. Only invest here if you plan on highly optimized clears — cycling a skill like Tragodia's S3 under pressure is where this shines.

S1 - "Fortify" - (Skip)

Fortify has devices that passively buff DEF and, on activation, increase the target's Block count and boost the DEF buff further. Percentage-based DEF buffs scale poorly on low-DEF Operators, and Nasti's personal ATK and DEF buff during activation rarely matters on an Artificer. No compelling reason to invest in Mastery here.

Nasti Module

Module Information
Module	CRA-X - The Engineers
Recommended Stage	Stage 1
Priority	Skip - resources are better spent elsewhere

Nasti's CRA-X module adds an extra Device slot, reduces Device deployment costs, and at Stage 3 allows Devices to share effects with units in range. These are decent on paper, but none of them change how Nasti fundamentally performs. Her core value works fine without any module investment, and the resources are better spent on S3M3 or other priorities. Safe to skip entirely.

Is Nasti Worth Pulling?

Short answer: Situational

Strengths

The only Operator in the game that can create a deployable high-ground tile
The platform persists even after Nasti retreats
Safety First grants Sanctuary and passive SP regen to all high ground Operators when ranged enemies appear
Synergizes with virtually any ranged Operator
Only needs Elite 2 to deliver her core value, no Mastery required
Execute doubles as a niche SP battery in advanced clears

Weaknesses

Extremely stage-dependent; contributes little when platform placement doesn't matter
Weak personal combat performance even by Artificer standards
Platform setup requires deliberate positioning and timing
Value scales heavily with the quality of your ranged Operators
Execute's SP battery role requires significant setup knowledge

Pull if you:

Enjoy off-meta or creative clears
Own strong ranged Operators like Pramanix the Prerita or Tragodia
Have a stable roster and pulls to spare on a unique long-term pick

Skip if you:

Are still building your foundational roster
Prefer Operators with consistent value across most stages
Are saving for higher-priority upcoming banners

Conclusion

As the only Operator in Arknights capable of building her own high ground tile, Nasti is a one-of-a-kind pick for Doctors who love creative, off-meta strategies. By following our Nasti build guide, we hope you can make the most of her unique construction kit on the battlefield. And for those who want to strengthen their roster around her, don't miss the chance to enhance your Arknights experience through Arknights top-up at LootBar.