Forbidden arts and dark Knowledge will teach your scouts to strike the most vulnerable spots and deliver deathblows! Upgrading the Knowledge increases the damage caused by your scouts.
| Level | Ale | Timber | Steel | Plates | Thoriars | Scrolls | Time | Requirements | Increased Scout Offense | Influence | |
| 1 | 330 | 330 | 330 | 330 | 330 | 400 | 2w 4d 00h 00m 00s | 4 | 21.5M | ||
| 2 | 450 | 450 | 450 | 450 | 450 | 565 | 3w 1d 12h 00m 00s | 8 | 21.5M | ||
| 3 | 625 | 625 | 625 | 625 | 625 | 790 | 4w 2d 12h 00m 00s | 1st, | >2nd | 22M | | |
| 4 | 890 | 890 | 890 | 890 | 890 | 1 150 | 6w 00h 00m 00s | 1st, | >6 | 22M | | |
| 5 | 1.3K | 1.3K | 1.3K | 1.3K | 1.3K | 1 600 | 8w 4d 12h 00m 00s | 2 | 22.5M | ||
| 6 | 1.95K | 1.95K | 1.95K | 1.95K | 1.95K | 2 300 | 13w 12h 00m 00s | 2nd, | >9 | 22.5M | | |
| 7 | 2.95K | 2.95K | 2.95K | 2.95K | 2.95K | 3 300 | 20w 3d 00h 00m 00s | 4, | >4 | 22.5M | | |
| 8 | 4.6K | 4.6K | 4.6K | 4.6K | 4.6K | 4 750 | 33w 2d 12h 00m 00s | 6, | >5 | 23M | | |
| 9 | 7.25K | 7.25K | 7.25K | 7.25K | 7.25K | 6 850 | 56w 4d 00h 00m 00s> 1 Year(s) | 9, | >5 | 23M | | |
| 10 | 12K | 12K | 12K | 12K | 12K | 10 000 | 100w 00h 00m 00s> 1 Year(s) | 14 | 23.5M | ||
| 32.35K | 32.35K | 32.35K | 32.35K | 32.35K | 31.71K | 248w 1d 12h 00m 00s> 4 Year(s) | 14 | 9 | 224M |
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