Upgrade & Merge Costs
Cost to merge units of each rarity at each level. Uses Forge Stone and Sliver Coin.
Forge Stone (440) Sliver Coin (124)
Common
| Level | Cost |
| +7 | Forge Stone ×32 |
| +8 | Forge Stone ×80 |
| +9 | Forge Stone ×240 |
| +10 | Forge Stone ×1800 |
| +11 | Forge Stone ×2400 |
| +12 | Forge Stone ×3200 |
Rare
| Level | Cost |
| +7 | Forge Stone ×64 |
| +8 | Forge Stone ×160 |
| +9 | Forge Stone ×480 |
| +10 | Forge Stone ×3600 |
| +11 | Forge Stone ×4800 |
| +12 | Forge Stone ×6400 |
Epic
| Level | Cost |
| +7 | Forge Stone ×960 |
| +8 | Forge Stone ×2220 |
| +9 | Forge Stone ×3600 |
| +10 | Forge Stone ×5400 |
| +11 | Forge Stone ×7200 |
| +12 | Forge Stone ×9600 |
Legendary
| Level | Cost |
| +7 | Forge Stone ×1920 |
| +8 | Forge Stone ×4440 |
| +9 | Forge Stone ×7200 |
| +10 | Forge Stone ×10800 |
| +11 | Forge Stone ×14400 |
| +12 | Forge Stone ×19200 |
Mythic
| Level | Cost |
| +5 | Forge Stone ×10 |
| +6 | Forge Stone ×10 |
| +7 | Forge Stone ×2560 |
| +8 | Forge Stone ×5920 |
| +9 | Forge Stone ×9600 |
| +10 | Forge Stone ×14400 |
| +11 | Forge Stone ×19200 |
| +12 | Forge Stone ×25600 |