L'étude approfondie des cartes des terres nordiques par les chamans permet aux convois commerciaux chargés de contributions d'atteindre plus vite leur objectif. Améliorer cette Connaissance permet d'augmenter la vitesse de marche des convois envoyés vers le Bastion.
| Niveau | Ale | Bois brut | Acier | Plaques | Thoriars | Parchemins | Temporels | Conditions | Vitesse d'envoi des convois de contribution | Influence | |
| 1 | 370 | 410 | 205 | 410 | 305 | 75 | 1w 1d 12h 00m 00s | 1er, | >5 | 9.3M | | |
| 2 | 505 | 560 | 275 | 560 | 410 | 80 | 1w 2d 00h 00m 00s | 3e, | >5 | 9.45M | | |
| 3 | 700 | 775 | 385 | 775 | 570 | 85 | 1w 3d 12h 00m 00s | 5, | >5 | 9.65M | | |
| 4 | 990 | 1.15K | 545 | 1.15K | 810 | 90 | 1w 5d 00h 00m 00s | 7, | >5 | 9.75M | | |
| 5 | 1.45K | 1.65K | 790 | 1.65K | 1.2K | 95 | 2w 00h 00m 00s | 9, | >5 | 9.85M | | |
| 6 | 2.15K | 2.4K | 1.2K | 2.4K | 1.75K | 100 | 2w 5d 12h 00m 00s | 11, | >5 | 9.95M | | |
| 7 | 3.3K | 3.65K | 1.8K | 3.65K | 2.7K | 105 | 3w 6d 12h 00m 00s | 13, | >5 | 10.5M | | |
| 8 | 5.1K | 5.65K | 2.8K | 5.65K | 4.15K | 110 | 4w 1d 00h 00m 00s | 15, | >5 | 10.5M | | |
| 9 | 8.1K | 9K | 4.45K | 9K | 6.6K | 115 | 5w 4d 12h 00m 00s | 17, | >5 | 10.5M | | |
| 10 | 13.5K | 15K | 7.25K | 15K | 11K | 120 | 7w 6d 00h 00m 00s | 20 | 10.5M | ||
| 36.17K | 40.25K | 19.7K | 40.25K | 29.5K | 975 | 32w 12h 00m 00s | 20 | 5 | 99.95M |
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