Sell Ores Pet Fusion Cost Estimator
C-tier to Mythic — total Cash and Gems for the August 2026 patch.
Fusing a Pet from C-tier to Mythic is the single biggest long-term Cash sink in Sell Ores. This page estimates the total Cash and Growth Gem cost so you know what to bankroll before you start a chain. The numbers match the August 2026 patch.
If you want the per-tier fusion cost table, see the Pets Roster page. For the broader Pet Fusion strategy, jump to the Players Hub.
Fusion cost per tier
| Step | Cash | Growth Gem needed |
|---|---|---|
| C → B | 500 | None |
| B → A | 5,000 | None |
| A → S | 50,000 | Small (optional, halves Cash) |
| S → Mythic | 250,000 | Devil’s Growth Gem (required) |
Quick totals
For a typical chain on Floor 7:
| Target | Total Cash | Total Gems |
|---|---|---|
| C → B | 500 | — |
| C → A | 5,500 | — |
| C → S | 55,500 | 1 Small (optional) |
| C → Mythic | 305,500 | 1 Devil’s Growth Gem + 1 Small (optional) |
The Devil’s Growth Gem is mandatory for the S → Mythic step. Without it the fusion will fail and you lose the S-tier Pet pair. The PETFUSION code drops a Devil’s Growth Gem on redeem, so claim it early.
Worked example — Devil’s Snacc to Mythic Snacc
The recommended chain for a new Floor 7 account:
- Hatch a C-tier Pet on Floor 1 (free starter hatch).
- Fuse C → B at the Pets menu — 500 Cash.
- Fuse B → A — 5,000 Cash.
- Fuse A → S — 50,000 Cash (optional Small Growth Gem halves this to ~25,000).
- Hatch a second A-tier Pet (or repeat the chain on a duplicate).
- Fuse S → Mythic — 250,000 Cash plus 1 Devil’s Growth Gem.
Total: ~305,500 Cash and 1 Devil’s Growth Gem for one Mythic Pet. If you are patient, repeat the chain for a second Mythic Pet and you can keep both in your active roster.
Which chain is cheapest per multiplier?
Comparing the Cash cost per percentage point of multiplier:
| Target | Multiplier | Cash cost | Cash per % |
|---|---|---|---|
| A-tier Pet | 13–15% | 5,500 | ~400 |
| S-tier Pet | 25–28% | 55,500 | ~2,000 |
| Mythic Pet | 31–35% | 305,500 | ~9,000 |
The Mythic step is the least efficient in cash-per-multiplier terms, but it is the only way to push past the S-tier multiplier cap. Treat it as an endgame goal rather than an early-game priority.
When to start a fusion chain
- Floor 1–2: Hatch C-tier Pets. Skip fusion until you have at least 5,000 Cash in reserve.
- Floor 3–4: Fuse C → B → A. Save the A-tier Pets for the Floor 5 unlock.
- Floor 5–6: Fuse A → S. Bank 50,000 Cash before each fusion.
- Floor 7: Fuse S → Mythic. Bank 250,000 Cash and claim the PETFUSION code for the Devil’s Gem.
For the priority list of which Pet to chase, see the Best Pets page.
Frequently Asked Questions
Quick answers to the most common questions.
Can I skip a fusion step?
No. Each fusion advances exactly one tier. Two C-tier Pets fuse into one B-tier Pet; two B-tier Pets fuse into one A-tier Pet, and so on.
What happens if I run out of Cash mid-chain?
Fusion is paused — you keep your current Pet and the partial chain. The Cash you spent is gone. Hatch more duplicates to continue the chain when you have the Cash.
Is the Devil's Growth Gem always required?
Yes for the S → Mythic step. The lower fusion steps use optional Small or Medium Growth Gems to halve the Cash cost, but the Mythic step requires the Devil's Gem or the fusion fails.
Can I fuse two Mythic Pets?
Not in the current patch. Mythic is the ceiling. The September 2026 roadmap hints at a "Fuser tier 4" cycle, but no Mythic-on-Mythic fusion has shipped yet.