01Overview
Lucion is a fast, mobile pinnacle boss with a huge life pool, portal phases full of minions and lightning nova waves. Beating him opens the Temple of the Triune, where you can desecrate an amulet: add a second corruption to an already corrupted amulet. On tiers 1 and 2 he can also drop the Demonic Cube.
His attacks ignore most of your block, so builds that rely on blocking need another plan.
02Summoning
| Ingredient | Where it drops |
|---|---|
| Demonic Insignia | Monsters in the Act 5 red-portal zones: Abaddon, Pit of Acheron and Infernal Pit |
| Talisman of Transgression | Monsters in the active corrupted zone |
| Flesh of Malic | Demon monsters |
Cube the three into a Shadow of Hatred and use it at the Blood Fountain in Harrogath. Cube it on its own to cycle tier 0, 1 and 2. Tier 0 gives three re-entry portals; tiers 1 and 2 give none but better rewards. Your pre-buffs are removed and your mercenary dies when you enter.
03Mechanics
Lucion is monster level 110 with 30% resistance to every damage type and a very large life pool. He is not a demon, so damage bonuses against demons do not apply, and he cannot be frozen. The fight repeats a cycle of three phases:
- Normal combat: melee hits, a bone wave (physical damage despite its look), Blink (a stunning nova), Dash (physical projectiles and a damaging trail), targeted delayed lightning strikes and lightning on the ground.
- Portal phase: he vanishes and Veiled Portals spawn minions: Shivering Children, Smouldering Defilers and Anguished Mothers, whose Smite stuns. Destroy the portals. He is invulnerable only while he is gone.
- Lightning nova phase: he moves to the center and fires slow and fast lightning waves with visible gaps. The red lightning is only a warning; the first wave stuns and the second hits hard.
Block barely works
All of Lucion's own attacks ignore two thirds of your chance to block, including Weapon Block. His minions are blocked normally. Plan your defense around life, physical damage reduction and lightning resistance instead of block.
04What you need
- 1,500-2,000 life.
- 80% or more maximum lightning resistance, with lightning at that cap.
- At least 30% physical damage reduction: his melee, bone wave and Dash are physical.
- Cannot Be Frozen is not needed here, and fire, cold and poison resistance matter little.
- In the third portal phase, kill the floating stunners first.
- Sustained single-target damage: his life pool makes this a long fight.
Builds that do it well
Easy on tier 0: Blade Sentinel Assassin and Whirlwind Barbarian, along with other strong melee builds (Berserk, Fury, Smiter, Maul) and the Immolation and Exploding Arrow Amazons. On tier 2, Blizzard Sorceress is moderate, while Meteor Sorceress finds him hard.
05Rewards
- Amulet desecration in the Temple of the Triune, once per kill: it adds a second corruption from the high-rarity amulet pool to a corrupted amulet. It succeeds 50% of the time on tier 0 and 60% on tiers 1 and 2. A failure turns the amulet into a rare that keeps two corruption modifiers.
- Demonic Cube: none on tier 0, 1 in 75 on tier 1 and 1 in 50 on tier 2. It rerolls the stats of a unique or set item within its ranges, including Annihilus and the Hellfire Torch.
- The Temple's golden chests drop one more item per tier.
Bring the right amulet
Desecration only makes sense on an amulet that is already good and already corrupted, and that you can afford to lose to a failed roll. Corrupt the amulet with a Worldstone Shard first.