Typhon

"The serpent titan Zeus sealed under Etna. Three arenas, solo." Typhon is the fifth boss, summoned with the Etna Fragments the other four drop. He has 20,000 health and his /boss tile reads Brutal, one step above the four altar bosses. He is open from day 1 and has no level gate.

Etna Fragments

Every kill of an altar boss drops one Etna Fragment of that boss. You need one of each.

A spare Etna Fragment salvages for 500,000 Ancient Energy at the Salvage Bench. The Hallowed Season Pass gives a Typhon summon at levels 22 and 44.

Summoning

1. Open /boss. Typhon's tile ticks off the fragments you carry. Click it to travel to his seal.
2. Right-click his altar to open Typhon's Seal. Click each fragment into its quarter of the seal. Click a set fragment to take it back.
3. With all four set, click Summon Typhon. It uses the four fragments and takes you into his caldera.

Closing the menu returns the fragments. They are spent only once he has risen. If the fight breaks off because of an error or a restart, they come back to /collect. A fight you lose does not return them.

Any number of players can fight him at once, each in their own caldera, so there is no queue.

The fight

The fight is solo and moves through three arenas. His tile lists his moves:

• The caldera: Mirror of Sorrow, Ashen Brand, Forge Slam
• The Magma Chamber: rising lava, Brood Vents, Magma Geyser
• The Summit: the storm, Boulder Hurl, Zeus's thunderbolt

He warns you a minute before his Flood fills the caldera. The Flood is Lethal: it can't be evaded, blocked or dodged.

If you die you keep your inventory and levels and respawn outside the caldera. There is no practice run and no Omen for Typhon. He does not pierce Armour, and the Lethal and Boss Mastery rules on Boss Fight Mechanics apply to him.

Rewards

Every kill gives one item from his pool: one of his 4 trims, the Hundred Heads bow trail or the unique jewel Eye of the Storm. On top of that, bonus drops that each roll on their own include a Godly Booster Box, Netherite Scrap, Calcified Dust, an Enchant Catalyst and, rarely, the pet item Charm of Ascension.

Typhon counts like the other bosses:

• His kills count toward your first 10 boss kills of the day, which roll the pool pick twice.
• He has his own Boss Mastery track and a title at 1,000 kills.
• He has his own leaderboard for kills and fastest clears.
• He has an RNG Meter.
• His kills count for Season Pass and clue scroll boss challenges and the weekly boss boards.

Talos can't run him, and he has no Uber.

The quest line Fire Under Etna leads to him. See The Quest Lines.