Mohg, Lord of Blood is a powerful and challenging optional boss in Elden Ring, located deep within the underground area known as Mohgwyn Palace. He is a Shardbearer with a unique set of blood-based attacks, and defeating him grants you a Great Rune and other valuable rewards. Here’s a detailed guide to help you conquer Mohg, Lord of Blood.
Preparation
•Location: Mohgwyn Palace, accessible through a teleporter in the Consecrated Snowfield or by navigating through the Siofra River area.
•Level: Aim for at least level 100 or higher due to Mohg's high damage output.
•Weapons: Use weapons with good reach and high damage output. Weapons with bleed or frostbite can also be effective, as they can stack damage over time. Ranged/Magic: Magic users should consider spells that allow for quick casting and distance control. Rock Sling or Comet can deal good damage, but be ready to dodge and reposition constantly.
•Spirit Ashes: Use the Mimic Tear Ash for its ability to distract Mohg and take a lot of the heat off you. Upgrade it to +10 if possible.
Items:
•Mohg's Shackle: Found in the Subterranean Shunning-Grounds, this can be used twice in the fight during Phase 1 to pin Mohg down, making him vulnerable for a short time.
•Purifying Crystal Tear: Mix this into your Wondrous Physick Flask. It helps mitigate the massive damage and health drain during Mohg's phase transition.
Armor & Talismans:
•High Fire and Physical Resistance: Mohg’s attacks deal a mix of physical and fire damage. Equip armor that helps mitigate both.
•Health and Stamina Management: Equip talismans like Erdtree’s Favor (for health, stamina, and equip load), Crimson Amber Medallion (for health), or Dragoncrest Shield Talisman (for physical resistance).
Consumables:
•Flask of Wondrous Physick: Prepare a mix to help boost survivability. Use Purifying Crystal Tear to counter his dangerous Phase 2 blood ritual attack.
•Fireproof Dried Liver: Increase fire resistance to mitigate his flame-based attacks.
•Staunching Boluses: Use these to counter blood loss if you’re getting hit frequently.
Phase 1 Strategy 
Key Attacks:
•Close-Range Combos and Blood Flame Attacks: Mohg uses a combination of melee strikes with his trident, often followed by blood flame attacks. Watch for the wind-ups and dodge accordingly. His trident slashes can be avoided by dodging to the side or backward.
•Blood Flame Pillars: Mohg can create pillars of blood flame that erupt from the ground. These can deal significant damage and cause bleed buildup. Keep moving and try to dodge to the side if you see them forming. Stay aware of your surroundings, as he can summon these pillars even at a distance.
Combat Tactics:
•Dodge the Blood Flame: If he throws blood flames at you, they will explode after a brief delay. Keep moving to avoid being caught in the blast.
•Maintain Distance if Necessary: If you’re struggling with his close-range attacks, try to maintain some distance. Magic users can exploit this to cast spells, but be prepared to dodge his long-range blood flame attacks.
•Chip Away at His Health: Phase 1 is about learning his attack patterns and avoiding unnecessary damage. Attack when you see an opening, especially after his slower, telegraphed moves.
Phase Transition:
•Health Drain Move: At around 50% health, Mohg will start a transition where he applies Blood Curses. Use this time to heal or attack, but be ready to use your Flask with the Purifying Crystal Tear to cleanse the massive bleed effect and damage he inflicts during this animation.
Phase 2 Strategy
•Increased Aggression: Mohg becomes more aggressive with more bloodflame attacks. Keep your distance when necessary to avoid the flames on the ground which cause bleed.
•Continued Use of Shackle: Although less effective, you can still use Mohg's Shackle once more if you didn't use it twice in Phase 1.
•Stay Mobile: Keep moving to avoid his flying and diving attacks which can be hard to dodge if you're not anticipating them.
•Exploit Openings: His larger attacks, like the ground explosion, leave him open for a moment. Dodge away from the initial impact and then close in to attack.
General Tips 
•Bleed Management: Keep an eye on your bleed meter. If it's about to fill, back off to let it reset, as triggering bleed will leave you vulnerable to follow-up attacks.
•Healing: Only heal after dodging an attack sequence or when Mohg is occupied with your summon.
•Environment: Use the vast space of the arena to your advantage, especially for running away from his AOE attacks or to heal safely.
Conclusion
With Mohg, Lord of Blood, players must dodge, position, and counter his bloodflame magic in Elden Ring. By understanding his attack patterns, equipping the right gear, and preparing for his Phase 2 mechanics, you can kill this Shardbearer and reap his powerful rewards. You can conquer Mohgwyn Palace by perseverance, timing dodges, healing, and repositioning.
