Formosus the Undying Fight Guide

Master the Lagon boss fight in Last Epoch! This guide covers all Lagon mechanics, phases, recommended stats, and unique rewards to help you conquer the Ending the Storm timeline.

Alright, so you've made it to Lagon, the final boss of the Ending the Storm Monolith Timeline. He's waiting for you in the Eye of the Storm, and let me tell you, he's a tough one. Lagon can absolutely wreck you with a massive one-shot mechanic if you're not careful, and depending on your gear and the Corruption level, he's got plenty of other ways to send you back to the character select screen. The key here is knowing exactly where you need to be at all times.

Stats / Weaknesses:

• Recommended Defensive Stats: 75% Lightning Resistance, 75% Cold Resistance. High movement speed and mobility skills are also crucial, along with strong defensive layers.

Phases:

1. Phase 1: Lagon uses Moon Beam (Channel and Hit), Moon Blast, Lightning Strikes, and Claw Smash. Focus on dodging and dealing damage.
2. Phase 2 (Starts at 50% HP): Lagon teleports you below the arena. You'll face Tentacles that must be killed while also dodging other attacks like small cold waves.
3. Phase 3: Similar to Phase 1, but Lagon can also use Phase 2 attacks, meaning you'll be dodging elemental attacks, eye beams, and claw attacks simultaneously.

Strategy:

• Moon Beam (Channel): This is Lagon's most dangerous attack. When he moves to either side of the arena and starts channeling, immediately run to the opposite edge. You need to be at the very edge to avoid getting wiped out by this massive Lightning and Cold damage beam.
• Moon Beam (Hit - below 65% HP): Lagon fires a beam directly in front of him. He'll lower his head slightly before firing. Dodge to the side when you see this tell. It still hits like a truck with Cold and Lightning damage.
• Moon Blast: Lagon will raise his arms and place a large white AoE on the ground. You have a tiny window to move out of this before it detonates for massive Cold and Lightning damage.
• Lightning Strikes: Small lightning circles appear all over the arena. There's a slight delay before they detonate, so keep moving to avoid them. They don't hit too hard, but every bit of damage avoided helps.
• Claw Smash: Lagon lifts a claw and slams it down. This deals Physical damage and can stun you, so be ready to evade when he starts raising a claw.
• Tentacles (Phase 2): After Lagon teleports you down at 50% health, he'll disappear and spawn several tentacles. You *must* kill all of them to progress. Keep hitting them while making sure they don't stun you. Be aware that other attacks, like small cold waves, will also be coming at you during this phase, so stay alert.
• General Movement: Always stay mobile, especially during the tentacle phase. Stuff comes at you from everywhere, and those tentacles can easily stun you.
• Watch Lagon: Pay close attention to his animations – lifting claws, moving his head, turning to the side. Most attacks are telegraphed, and reacting quickly is key.
• Arena Edge Caution: While the edge can be safe for some attacks, don't get too comfortable there, as it can also trap you for others.

Unique Boss-Specific Rewards:

• Common Drops (50% chance each, mutually exclusive): Alluvion, Coral Aegis. These can drop in Normal or Empowered versions and aren't affected by Corruption.
• Rare Drops: Stormcarved Testament (more likely at high Corruption in Empowered Monoliths, very rare in Normal), Eye of Storms (a rare weapon exclusive to Empowered timelines, drop rate increases with Corruption).

Monolith Blessings Available:

Harbinger of Chaos (Timeline Boss):

The Harbinger for this timeline is the Harbinger of Chaos. She uses some of Lagon's attacks, like the small Cold waves from the tentacle phase, and a smaller, less lethal version of the Moon Beam. She also has her own set of moves:

• Portal Spear: Throws a spear through portals. Easy to avoid.
• Spear Beam: Fires a straight-line beam in front and behind her (Fire damage).
• Spear Dash: Dashes towards you (Physical and Void damage).
• Spear Thrust: Slides forward with quick attacks (Physical damage).
• Void Blast: Large orbs appear on the ground (Void damage).
• Void Slam: Flies up and slams down on a telegraphed area (Void damage).
• Void Rush: Rushes towards a player (Physical and Void damage).
• Void Slash: Spins and slashes, creating a moving blast (Void damage).
• Void Spears: Marks the ground, detonates into projectiles that apply Frailty and Armor Shred (Void damage).

Harbinger Unique Drops: Black Blade of Chaos, Harbinger's Needle. She also drops the Harbinger Eye needed to summon Aberroth.