Steal An Egg Aetheron: Secret Fusion Shrine Guide

What is Aetheron in Steal An Egg?

Aetheron is a Divine pet produced through the Secret Fusion Shrine in Update 4, Angels & Demons. Its documented recipe uses the Light pet ArchAngel and the Dark pet World Burner:

ArchAngel (Light) + World Burner (Dark) → Fusion Egg → hatch Aetheron

This is a shrine fusion route, not a normal egg-pool record. The supplied material does not establish a hatch probability, a success percentage, or a multiplier for Aetheron, so this page does not add one. Use the Archangel page for the two inputs and the pet index for the game’s own collection screen.

Where is the Secret Fusion Shrine?

The shrine is reached through the Angels & Demons area. The route is described as having a 20B Speed gate, a community-reported requirement that should be treated as Unconfirmed until the current game shows otherwise. Once inside the area, look for the waterfall entrance opposite the main gate.

The shrine uses two colored pedestals, one yellow and one red. They are the visible setup for the Light-and-Dark fusion interaction. The exact color-to-pet assignment is not established in the supplied material, so do not assume that a particular pedestal changes the recipe.

The Skeleton Horse page covers the same Update 4 area and its waterfall route. It is useful context for finding the room, but Aetheron has its own recipe and should not be treated as another Skeleton Horse result.

How do you fuse Aetheron?

Bring the required inputs before committing to the shrine:

1. Reach the Angels & Demons area after meeting the reported Speed gate.
2. Enter the Secret Fusion Shrine through the waterfall opposite the main gate.
3. Use one Light pet and one Dark pet in the shrine’s fusion setup. The available requirement is described around Eternal/Divine pets; check the current in-game prompt before using a pet.
4. For the Aetheron recipe, use ArchAngel as the Light input and World Burner as the Dark input.
5. Collect the resulting Fusion Egg and hatch it to obtain Aetheron.

The shrine can also be used as a two-player interaction. The supplied material says that both players can cooperate and that each player receives one Fusion Egg. It also says the shrine action is limited to once per account. Plan the inputs first: co-op does not mean that either account gets unlimited attempts.

Is Aetheron the highest-income pet?

An Eldorado.gg community ranking snapshot dated September 14, 2026 lists Aetheron as #1 for income in the game at $6.9B/s. This is a third-party community figure, not a confirmed value from the game’s own Pet Index:

Claim	Recorded value	Status
Income ranking	#1 in the game	Eldorado.gg snapshot; [Unconfirmed]
Recorded income	$6.9B/s	Eldorado.gg snapshot; [Unconfirmed]

Treat both entries as a lead for checking the live game, not as a guaranteed payout for every Aetheron. If the best egg page or pets index has a source-checked value that conflicts with this snapshot, use the site’s source-checked record or leave the claim out. A patch can also make a dated community ranking stale.

What should you check before using the recipe?

Verify the Light/Dark identity of both input pets, read the shrine’s current requirement, and remember the one-use account limit. The supplied material does not provide a probability, income multiplier, or separate hatch odds for Aetheron. Do not infer any of those values from the fusion result or from the $6.9B/s community snapshot.

For the input details, open Archangel and World Burner. For collection confirmation, check Pet Index after hatching. These pages have separate jobs: this page records the shrine recipe and route, while the index and live game screen decide what is actually confirmed.

Sources and verification status

• Eldorado.gg community ranking snapshot, checked September 14, 2026 — Aetheron listed as the game’s #1 income pet at $6.9B/s; third-party and marked [Unconfirmed].
• Update 4 Angels & Demons / Secret Fusion Shrine material — 20B Speed gate, waterfall opposite the main gate, yellow and red pedestals, Light/Dark Eternal or Divine inputs, co-op Fusion Eggs, and the once-per-account limit.
• The Aetheron recipe in this page is limited to the supplied route: ArchAngel (Light) plus World Burner (Dark), then a Fusion Egg and hatch. No probability or multiplier is asserted.