The Secret Shrine is the only place in Steal An Egg where two pets can be combined into a new one. It sits inside the Angels & Demons biome (20B Speed) and has two confirmed recipes: Equinox from Pegasus + Skeleton Horse, and Aetheron from ArchAngel + World Burner.
Both recipes destroy two pets to make one, so the honest question is not “which is stronger” but “does this make me more money”. Below, the recipes, every ingredient with its real income, and the exact number the freed pen slot has to beat.
What the Secret Shrine does
The shrine arrived with Update 4, “Angels vs Demons”, which added the biome, 16 new pets, a new egg and a hidden shrine. The official note only said the Demons had been whispering about a shrine hidden somewhere in the biome; the wiki later explained that it fuses one Light pet with its Darkness counterpart of the same rarity.
Neither source describes the route to the shrine. Any step-by-step path you find elsewhere is not confirmed by the wiki or the patch notes.
Light nights and Darkness nights
Angels & Demons changes side every night. On a Light night the nests hold Angel pets, on a Darkness night they hold Demon pets, eight each. You cannot collect both halves of a recipe in one night, and occasionally a rare Merged night appears where both sides spawn with extra luck.
That means every fusion is a two-session project. Plan for it:
- Reach 20B Speed so the biome is open.
- On a Light night, steal your Light ingredient and let it grow.
- On a Darkness night, steal the matching Darkness pet.
- Find the shrine and combine the pair.
- Put something good into the pen slot you just freed.
The two recipes
| Light pet | Darkness pet | Rarity | Result | Result income |
|---|---|---|---|---|
| Pegasus ($1.3B/s) | Skeleton Horse ($1.3B/s) | Eternal | Equinox | $1.8B/s |
| ArchAngel ($5B/s) | World Burner ($5B/s) | Divine | Aetheron | $6.9B/s |
Both results come as eggs according to the wiki: the Equinox Egg takes 10 hours to grow and the Aetheron Egg 18 hours. Neither has a documented hatch reward, so you get the pet and nothing else.
Every ingredient, with numbers
Every Light pet has a Darkness twin at the same rarity and the same income. That symmetry is the whole design of the shrine.
Light side
| Pet | Rarity | Base $/s | Hatch reward | Grow time |
|---|---|---|---|---|
| Light Dove | Legendary | $225 | +3M Speed, $22.5M | 5m |
| Winged Lamb | Mythic | $1.25M | +4M Speed, $125M | not listed |
| Sacred Moth | Cosmic | $16M | +8M Speed, $1.6B | not listed |
| Holy Peacock | Cosmic | $25M | +20M Speed, $2.5B | not listed |
| Pure Jellyfish | Secret | $225M | +30M Speed, $22.5B | not listed |
| Centaur | Secret | $350M | not listed | not listed |
| Pegasus | Eternal | $1.3B | +200M Speed, $140B | 5h |
| ArchAngel | Divine | $5B | not listed | not listed |
Darkness side
| Pet | Rarity | Base $/s | Hatch reward | Grow time |
|---|---|---|---|---|
| Flame Sprite | Legendary | $225 | +3M Speed, $22.5M | 5m |
| Toro | Mythic | $1.25M | +4M Speed, $125M | not listed |
| Imp | Cosmic | $16M | not listed | not listed |
| Demon Hound | Cosmic | $25M | +20M Speed, $2.5B | not listed |
| Gargoyle | Secret | $225M | +30M Speed, $22.5B | 3h |
| RazorFang | Secret | $350M | +90M Speed, $35B | 3h 15m |
| Skeleton Horse | Eternal | $1.3B | +200M Speed, $130B | 5h |
| World Burner | Divine | $5B | not listed | not listed |
A detail worth knowing before you spend a session on it: the Eternal eggs are the best Speed farm in the game. Pegasus pays +200M Speed and $140B on hatch, Skeleton Horse +200M and $130B. If your goal is the 50B Enchanted Forest, farming Eternal eggs beats almost anything else you could be doing.
The break-even math
Two pets in, one pet out. Using base incomes only:
| Recipe | Both ingredients | Result | Change | Per pen slot |
|---|---|---|---|---|
| Pegasus + Skeleton Horse → Equinox | $2.6B/s | $1.8B/s | −$0.8B/s | $1.3B → $1.8B (+38%) |
| ArchAngel + World Burner → Aetheron | $10B/s | $6.9B/s | −$3.1B/s | $5B → $6.9B (+38%) |
So on total income, fusing always loses money. You are trading $0.8B/s or $3.1B/s for one free pen slot and a 38% better income per slot.
That trade is only good if the slot was the bottleneck:
- Equinox: the freed slot has to earn more than $0.8B/s. Kitsune ($1.8B/s) or Gorilla King ($880M/s) clears it.
- Aetheron: the freed slot has to earn more than $3.1B/s. Nightflame ($3B/s) misses by a hair, so you need another Divine, or a heavily mutated pet, or a Luminous/Skeletal reroll pet.
If you still have empty pen slots, do not fuse. Two ingredients earn more than one result, and an empty slot earns nothing.
Is Aetheron worth it?
Only in a full pen, and only as a slot-efficiency play. Aetheron at $6.9B/s is the third-highest base income in the game behind Skeletal Sabertooth ($9B/s) and Mecha Scrambler ($7.5B/s), which means it is not a “biggest pet” trophy. It is a way to compress two $5B/s pets into one $6.9B/s pet so a third pet can start earning.
Two more reasons people fuse anyway:
- Collection. Equinox and Aetheron only come from the shrine, so anyone filling the index has to do it.
- Cost certainty. The ingredients are guaranteed eggs from a 5-minute nest, unlike the 1% Luminous reroll or the 0.5% Mecha Scrambler drop. Aetheron is the most reliable path to a Divine-tier pet in the game.
What the sources do not confirm
- Size and mutations. The wiki does not say whether the result keeps the ingredients’ weight or color mutation. If you fuse a huge Rainbow Pegasus, treat the result as unknown. Fuse plain ingredients first.
- Whether you get an egg or the finished pet. The shrine entries are written as eggs with grow times, but no source describes the handover.
- The exact location. “Hidden inside the biome” is all there is.
- The hidden fusion machine. Update 7’s notes mention a second, hidden fusion machine in the Enchanted Forest. Its location, recipes and results are still undocumented.
Where to go next
- Best pets: the income ranking Aetheron has to beat.
- Steal An Egg calculator: add mutations and weight to any of these numbers.
- Special eggs: the Luminous and Skeletal rerolls, which are the real top of the income table.
- Speed guide: how to reach 20B and then 50B.
Sources & last checked
Last checked: November 9, 2026.
- rblxguide.com Secret Shrine fusion guide - recipes, Light and Darkness pet tables, grow times, income math (October 11, 2026)
- rblxguide.com Angels & Demons biome - 20B Speed requirement, guardians, Light/Dark nights, Merged form
- rblxguide.com update log - Update 4 (shrine), Update 7 (hidden fusion machine)
- rblxguide.com mounts guide - top-10 base income table used to place Aetheron third