Raiden Shogun shines in teams where her ability to regenerate energy for the entire party can be fully utilized, making her not just a burst DPS but also an invaluable support unit. Adjust her build according to how you intend to use her in team compositions, focusing on either her Burst damage or her support capabilities.
Raiden Shogun, or Ei, is a versatile Electro character who can serve as both a powerful burst DPS and an energy battery for her team. Here's how to build her effectively:
Suggested Weapons 
•Engulfing Lightning: This weapon is tailored for her, providing Energy Recharge, which helps with her Burst uptime, and an ATK bonus based on Energy Recharge over 100%.
•The Catch: A free-to-play option from fishing, it provides Energy Recharge and increases Elemental Burst DMG, perfectly aligning with her kit.
•Skyward Spine: High base ATK with Energy Recharge, also increases CRIT Rate and has a vacuum blade effect for additional damage.
•Primordial Jade Winged-Spear: Good if you need more CRIT Rate; it also provides a stacking ATK increase, though less specific to her burst-centric playstyle.
Artifacts
•4-piece Emblem of Severed Fate: This set is ideal for Raiden as it increases Energy Recharge, and her Burst damage scales with the amount of Energy Recharge she has.
•2-piece Thundering Fury + 2-piece Noblesse Oblige: For a mix of Electro reaction enhancement and increasing the power of her Elemental Burst.
Stat Priorities
•Sands: Energy Recharge% until you reach a comfortable burst uptime (around 200-220%), then ATK%.
•Goblet: Electro DMG Bonus.
•Circlet: CRIT Rate or CRIT DMG, balancing these to get a high CRIT ratio.
Substats to Look For
•Energy Recharge (crucial until burst uptime is consistent)
•CRIT Rate/CRIT DMG
•ATK%
•Elemental Mastery can be considered if focusing on Overload or Electro-Charged reactions but is secondary.
Talent Priority
•Elemental Burst (Q) - Secret Art: Musou Shinsetsu: This is where most of her damage comes from, as it not only deals massive Electro damage but also refills energy for her team.
•Elemental Skill (E) - Transcendence: Baleful Omen: It provides coordinated attacks with team members, increases Burst DMG based on the number of resolve stacks, and can trigger Overload reactions.
•Normal Attack: Although not as crucial, upgrading this will enhance her damage output when her Burst mode is active.
Team Composition
•Battery Support: Characters like Kujou Sara or other Electro characters can help recharge her burst.
•Hypercarry Teams: Pair with characters like Bennett, Xingqiu, or Xiangling to enable elemental reactions or buffs that can greatly increase her damage output during her Burst.
•Electro Teams: Combining her with Beidou for an Electro resonance or with characters who benefit greatly from her ability to recharge energy like Eula for Physical DPS teams or Hu Tao for Overload.
Playstyle Tips 
•Use her Elemental Skill to mark enemies, which will then deal coordinated attacks with other characters' bursts or attacks.
•Her Burst converts part of her attacks to Electro DMG, making her excellent for sustained DPS during its duration.
