Special herb repertories and secret rituals will allow your Shaman to more quickly gain the power they need to banish Ghosts. Upgrading this Knowledge speeds up the Shaman's power restoration.
| Level | Food | Lumber | Iron | Stone | Silver | Gold | Time | Requirements | Increased Power Restoration | Influence | Hero’s Experience |
| 1 | 3M | 3M | 3M | 3M | 3M | 96.5K | 5w 00h 00m 00s | 1 | 250K | 120K | |
| 2 | 6M | 6M | 6M | 6M | 6M | 130K | 7w 2d 00h 00m 00s | 3 | 500K | 260K | |
| 3 | 12M | 12M | 12M | 12M | 12M | 170K | 10w 4d 00h 00m 00s | 4 | 1M | 425K | |
| 4 | 24M | 24M | 24M | 24M | 24M | 230K | 15w 2d 00h 00m 00s | 6 | 2M | 620K | |
| 5 | 48M | 48M | 48M | 48M | 48M | 305K | 22w 1d 00h 00m 00s | 7 | 4M | 855K | |
| 6 | 95.5M | 95.5M | 95.5M | 95.5M | 95.5M | 410K | 32w 00h 00m 00s | 9 | 8M | 1.15M | |
| 7 | 195M | 195M | 195M | 195M | 195M | 560K | 46w 3d 00h 00m 00s | 11 | 16M | 1.45M | |
| 8 | 385M | 385M | 385M | 385M | 385M | 760K | 67w 3d 00h 00m 00s> 1 Year(s) | 13 | 32M | 1.85M | |
| 9 | 765M | 765M | 765M | 765M | 765M | 1.05M | 97w 6d 00h 00m 00s> 1 Year(s) | 16 | 64M | 2.3M | |
| 10 | 1.55B | 1.55B | 1.55B | 1.55B | 1.55B | 1.45M | 142w 00h 00m 00s> 2 Year(s) | 20 | 130M | 2.8M | |
| 3.08B | 3.08B | 3.08B | 3.08B | 3.08B | 5.16M | 446w 00h 00m 00s> 8 Year(s) | 20 | 257.75M | 11.83M |
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