The Mountain King is a formidable Field Boss introduced in Genshin Impact with the version 4.1 update, located in the Enkanomiya region.
Image via HoYoverse.
The Mountain King, with its dual elemental nature and imposing presence, challenges players to adapt their strategies dynamically, making it a memorable encounter in the depths of Enkanomiya.
Here's a detailed guide:
The Basics
•Appearance and Lore: The Mountain King is depicted as an ancient, colossal beast with multiple heads, echoing the themes of Primordial Sea Beasts from Enkanomiya's lore. Its design suggests a mixture of stone and flesh, embodying the concept of a guardian of the earth.
•Location: Enkanomiya: This boss resides in the Abyss of the Deep, specifically at the "Place of Fiery Rebirth" in the eastern part of Enkanomiya.
Combat Mechanics
Phases
•Initial Phase: The boss starts with a protective barrier, which must be broken using specific elemental reactions or certain types of damage.
•Main Combat Phase: After the barrier is down, it unleashes a variety of attacks, transitioning between elemental types like Geo and Electro.
Attacks
•Geo Pillars: Summons pillars from the ground, dealing Geo DMG.
•Electro Storm: Creates a storm that periodically strikes the arena, dealing Electro DMG.
•Multi-Head Attack: Each head might attack independently, requiring quick dodging or blocking.
Weaknesses
•Elemental Reactions: While it has high resistance to Geo, it's susceptible to Electro reactions like Overload or Superconduct.
Strategy 
Team Composition
•DPS: Characters like Eula for Physical damage or Keqing for Electro can exploit its weaknesses.
•Supports: Characters like Fischl for Electro resonance or Albedo for Geo support.
•Healer/Shielder: Characters like Diona for Cryo resonance or Zhongli for blocking Geo attacks.
Tactics
•Barrier Break: Focus on breaking the initial barrier quickly, possibly using characters like Zhongli or Claymore users for Geo resistance.
•Mobility: High mobility characters can help avoid its wide area attacks, especially during the Electro Storm.
•Elemental Mastery: Characters like Sucrose can enhance elemental reactions, maximizing damage from Overload or Superconduct.
Rewards
•Defeating the Mountain King grants:
•Ancient Stone of Aranara: An ascension material for characters like Tighnari or potentially new characters linked to Enkanomiya.
•Primogems
•Hero's Wit
•Mystic Enhancement Ore
Tips: 
•Adapt to Changes: Be ready to switch strategy as it shifts between Geo and Electro phases.
•Interrupting: Look for opportunities to interrupt its special moves for bonus damage windows.
•Environmental Use: Enkanomiya's environment might offer strategic points for dodging or attacking, especially given its verticality.
•Team Rotation: Efficiently cycling through your characters to manage healing, elemental reactions, and high damage output can be the key to victory.
