★P0. Multipliers apply to passive income and sale value. One mutation per pet — they do not stack (dual-sourced).
| Mutation | Multiplier | Source | Stacks? | Status | Last verified |
|---|---|---|---|---|---|
| Golden | ≈1.5× | Pet Roll (Egg Mystery) | No | Verified | 2026-10-23 |
| Cosmic | ≈2× | Cosmic / Cosmic Invasion event | No | Verified | 2026-10-23 |
| Inferno | ≈3× | Volcano event | No | Verified | 2026-10-23 |
| Admin | ≈4× | Admin Abuse event (dev-hosted) | No | Verified | 2026-10-23 |
A pet holds only one mutation. Sitting through Cosmic/Volcano while already Golden does not add a second multiplier — keep chasing a fresh higher-tier pet instead.
Sources: bloxodes mutations · ATH multipliers