Every fight, every skirmish, every battle for a Fortress leaves scars on a Viking's body. But this makes the Viking even stronger and more resilient. Upgrading this Knowledge increases your army's health in battles for Fortresses.
| Level | Gold | Soul Shard | Time | Requirements | Troop health in Fortresses | Influence | Hero’s Experience | ||||||||
| 1 | 175K | 34.5K | 68w 3d 00h 00m 00s> 1 Year(s) | Troop Health When Guarding Fortresses III 1, Oracle 36 | 1% | 19K | 48.5K | ||||||||
| 2 | 265K | 51.5K | 101w 5d 00h 00m 00s> 1 Year(s) | Troop Health When Guarding Fortresses III 2, Oracle 36 | 4% | 43K | 61K | ||||||||
| 3 | 355K | 76K | 150w 6d 00h 00m 00s> 2 Year(s) | Troop Health When Guarding Fortresses III 3, Oracle 37 | 8% | 97K | 77K | ||||||||
| 4 | 445K | 115K | 224w 1d 00h 00m 00s> 4 Year(s) | Troop Health When Guarding Fortresses III 4, Oracle 37 | 13% | 220K | 97K | ||||||||
| 5 | 540K | 170K | 332w 5d 00h 00m 00s> 6 Year(s) | Troop Health When Guarding Fortresses III 5, Oracle 38 | 19% | 495K | 125K | ||||||||
| 6 | 635K | 250K | 494w 1d 00h 00m 00s> 9 Year(s) | Troop Health When Guarding Fortresses III 6, Oracle 38 | 26% | 1.15M | 155K | ||||||||
| 7 | 740K | 370K | 733w 5d 00h 00m 00s> 14 Year(s) | Troop Health When Guarding Fortresses III 7, Oracle 39 | 34% | 2.55M | 190K | ||||||||
| 8 | 895K | 550K | 1 089w 3d 00h 00m 00s> 20 Year(s) | Troop Health When Guarding Fortresses III 8, Oracle 39 | 45% | 5.7M | 235K | ||||||||
| 9 | 1.2M | 815K | 1 617w 6d 00h 00m 00s> 31 Year(s) | Troop Health When Guarding Fortresses III 9, Oracle 40 | 56% | 13M | 290K | ||||||||
| 10 | 1.85M | 7.1M | 1.25M | 3.68M | 2 402w 3d 00h 00m 00s> 46 Year(s) | 7 215w 3d 00h 00m 00s> 138 Year(s) | Troop Health When Guarding Fortresses III 10, Oracle 40 | 70% | 70% | 29M | 52.27M | 355K | 1.63M |
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