DIRECT ANSWER
Rainbow has the highest multiplier in the sourced list.
Rainbow is listed at 3×, Diamond at 2.5×, and Gold plus all three weather variants at 2×. “Highest listed” does not mean this site knows the chance to obtain one.
| Mutation | Type | Multiplier | Reported condition |
|---|---|---|---|
| Gold | Natural | 2× | Reported on newly obtained Animals. |
| Diamond | Natural | 2.5× | Reported on newly obtained Animals. |
| Rainbow | Natural | 3× | Highest multiplier in the sourced list. |
| Hacked | Weather | 2× | Reported during matching weather. |
| Lava | Weather | 2× | Reported during matching weather. |
| Toxic | Weather | 2× | Reported during matching weather. |
NATURAL
Gold, Diamond, Rainbow
The sourced guide reports these can appear on newly obtained Animals in any biome. Exact odds were not published in the evidence we checked.
WEATHER
Hacked, Lava, Toxic
The reported weather variants require their matching weather and apply to newly obtained Animals—not Animals already sitting in the pen.
One mutation per Animal is the reported rule.
Do not plan around stacking two labels on the same Animal. Weather variants may rely on the label rather than a visibly changed Egg, according to the community guide.
OFFICIAL EVENT NAME · UNKNOWN VALUE
Cosmic Mutation is confirmed; its multiplier is not.
The exact-universe Ancient Egypt event names a secret COSMIC event and Cosmic Mutation. The official record does not give an activation method, multiplier, odds, or sale-value formula.
Sources and limits
The table is community-reported and cross-checked between two current guides. The Cosmic name comes from the official Roblox event record. Values can change, so this page keeps dates visible rather than presenting the table as permanent official balance.