Your Hero’s intimidating battle cry will strike terror into the hearts of the Invaders, and their thirst for battle will turn into panic and uncertainty. Upgrading this Knowledge will decrease the Invaders’ defense.
| Level | Food | Lumber | Iron | Stone | Silver | Gold | Time | Requirements | Reduced Invader Defense | Influence | Hero’s Experience |
| 1 | 5K | 3.25K | 3.25K | 3.25K | 6K | 665 | 01h 30m 00s | 2 | 300 | 21K | |
| 2 | 12.5K | 8.15K | 8.15K | 8.15K | 14K | 1.15K | 07h 30m 00s | Oracle 13 | 4 | 690 | 25.5K |
| 3 | 31.5K | 20.5K | 20.5K | 20.5K | 32K | 2.35K | 21h 00m 00s | Oracle 14 | 6 | 1.6K | 31K |
| 4 | 78.5K | 51K | 51K | 51K | 73.5K | 4.55K | 2d 00h 00m 00s | Oracle 15 | 9 | 3.7K | 37.5K |
| 5 | 200K | 130K | 130K | 130K | 170K | 10.5K | 5d 00h 00m 00s | Oracle 16 | 12 | 8.4K | 45.5K |
| 6 | 490K | 320K | 320K | 320K | 390K | 24K | 1w 6d 00h 00m 00s | Oracle 17 | 15 | 19.5K | 55.5K |
| 7 | 1.25M | 795K | 795K | 795K | 890K | 53.5K | 4w 3d 00h 00m 00s | Oracle 18 | 19 | 44.5K | 67K |
| 8 | 3.1M | 2M | 2M | 2M | 2.05M | 125K | 11w 00h 00m 00s | Oracle 19 | 24 | 105K | 81.5K |
| 9 | 7.65M | 5M | 5M | 5M | 4.7M | 295K | 27w 2d 00h 00m 00s | Oracle 20 | 29 | 235K | 99K |
| 10 | 19.5M | 12.5M | 12.5M | 12.5M | 11M | 690K | 68w 1d 00h 00m 00s> 1 Year(s) | Oracle 21 | 40 | 545K | 120K |
| 32.32M | 20.83M | 20.83M | 20.83M | 19.33M | 1.21M | 113w 6d 06h 00m 00s> 2 Year(s) | 39,85 | 963.69K | 583.5K |
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