The Electro Regisvine is one of the elemental Regisvines in Genshin Impact, known for its unique electro-charged attacks and challenging mechanics. Here's a detailed overview.
Image via HoYoverse.
The Basics
•Appearance: The Electro Regisvine appears as a large, plant-like creature with a central core surrounded by glowing, electric vine-like appendages. Its body pulsates with Electro energy, and its vines can move and whip around, adding to its intimidating presence.
•Location: Liyue Region: This boss can be found in the Qingce Village area, specifically near the Qingxu Pool, south of the city of Liyue.
Combat Mechanics
•Phases: The fight with the Electro Regisvine involves dealing with both its core and its protective vines:
•Initial Phase: The core is protected by a shield that must be depleted by destroying its vines.
•Vine Regeneration: After breaking enough vines, it will regenerate them, requiring continuous management.
•Critical Phase: When sufficiently damaged, it might attempt to heal or become more aggressive, which can be interrupted for bonus damage.
Attacks
•Electro Vines: Its vines whip around, dealing Electro damage, and can grab nearby characters, dealing continuous damage.
•Electro Blasts: Fires rapid Electro projectiles that can track or spread across the battlefield.
•Pillar Summon: Summons Electro pillars or shockwaves that can stun or damage players.
•Regeneration: At certain health thresholds, it might enter a phase where it attempts to regenerate health or shield, which can be interrupted.
Strategy 
•Elemental Weakness: The Electro Regisvine is weak to Geo and Cryo. Using characters like Zhongli or Kaeya can be effective.
Avoiding Damage
•Use characters with high mobility or crowd control like Venti or Jean to avoid the vines or manage the battlefield when it summons pillars.
•Characters with shields, especially Zhongli, can mitigate the damage from its Electro attacks.
DPS Focus
•Focus on breaking its vines to expose the core. Characters with high burst damage like Eula or Hu Tao can deal significant damage once the core is exposed.
Elemental Reactions
•Triggering reactions like Superconduct (Electro + Cryo) can increase physical damage, or using Zhongli's shield to absorb Electro can convert damage into healing.
•Healing and Shielding: Given its Electro nature, having a healer like Bennett or a shield like Noelle can be beneficial.
Team Composition
•DPS: Characters like Razor or Keqing can exploit Electro reactions or deal high physical damage.
•Supports: Characters like Fischl for Electro resonance or Xingqiu for Hydro reactions.
•Healer: Diona for healing with Cryo resonance or Barbara for Hydro application alongside healing.
•Utility: Zhongli for Geo resonance, shield, and resistance to Electro or Sucrose for Elemental Mastery and crowd control.
Rewards
•Defeating the Electro Regisvine grants:
•Primogems
•Hero's Wit
•Mystic Enhancement Ore
•Talent materials like "Teachings of Resistance" or higher tiers for character ascensions.
Tips: 
•Vine Management: Continuously break its vines to keep the core exposed for damage.
•Elemental Mastery: Characters with high Elemental Mastery can benefit from reactions, especially if using Superconduct.
•Interrupting Regeneration: Focus heavy damage when it tries to regenerate to prevent it from healing.
•Dodge Timing: Learn to dodge its Electro whip and projectile attacks. The vines have a telegraph before they lash out.
The Electro Regisvine offers a unique challenge with its Electro-based attacks and vine mechanics, requiring players to balance between offense and defense, making it a dynamic and engaging Field Boss in Genshin Impact.
