Nothing can stop their assault! Consumed by uncontrollable fury, the Vikings from the world of the dead ignore their wounds and simply continue fighting. Upgrading this Knowledge increases the health of your tier VIII warriors during an attack.
| Level | Gold | Soul Shard | Time | Requirements | Tier VIII warrior health during attack | Influence | Hero’s Experience | ||||||||
| 1 | 115K | 22.5K | 44w 6d 00h 00m 00s | Troop Health II 1, Oracle 36 | 1% | 15.5K | 41K | ||||||||
| 2 | 175K | 33.5K | 66w 4d 00h 00m 00s> 1 Year(s) | Troop Health II 2, Oracle 36 | 4% | 35K | 51K | ||||||||
| 3 | 235K | 49.5K | 98w 5d 00h 00m 00s> 1 Year(s) | Troop Health II 3, Oracle 37 | 8% | 79K | 64K | ||||||||
| 4 | 295K | 73.5K | 146w 4d 00h 00m 00s> 2 Year(s) | Troop Health II 4, Oracle 37 | 12% | 180K | 80K | ||||||||
| 5 | 350K | 110K | 217w 5d 00h 00m 00s> 4 Year(s) | Troop Health II 5, Oracle 38 | 16% | 405K | 99.5K | ||||||||
| 6 | 415K | 165K | 323w 1d 00h 00m 00s> 6 Year(s) | Troop Health II 6, Oracle 38 | 21% | 910K | 125K | ||||||||
| 7 | 485K | 245K | 479w 6d 00h 00m 00s> 9 Year(s) | Troop Health II 7, Oracle 39 | 27% | 2.05M | 155K | ||||||||
| 8 | 585K | 360K | 712w 4d 00h 00m 00s> 13 Year(s) | Troop Health II 8, Oracle 39 | 33% | 4.65M | 195K | ||||||||
| 9 | 775K | 535K | 1 058w 2d 00h 00m 00s> 20 Year(s) | Troop Health II 9, Oracle 40 | 41% | 10.5M | 235K | ||||||||
| 10 | 1.2M | 4.63M | 790K | 2.38M | 1 571w 3d 00h 00m 00s> 30 Year(s) | 4 719w 5d 00h 00m 00s> 90 Year(s) | Troop Health II 10, Oracle 40 | 50% | 50% | 24M | 42.82M | 290K | 1.34M |
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