When preparing for a march, your killers sharpen the blades of their axes. They head into battle with the confidence that their blows will be accurate and fatal. Upgrading this Knowledge increases the offense of your killers during an attack.
| Level | Gold | Soul Shard | Time | Requirements | Killer offense during an attack | Influence | Hero’s Experience | ||||||||
| 1 | 115K | 22.5K | 44w 6d 00h 00m 00s | Killer offense against siege 1, Oracle 36 | 1% | 15.5K | 41K | ||||||||
| 2 | 175K | 33.5K | 66w 4d 00h 00m 00s> 1 Year(s) | Killer offense against siege 2, Oracle 36 | 4% | 35K | 51K | ||||||||
| 3 | 235K | 49.5K | 98w 5d 00h 00m 00s> 1 Year(s) | Killer offense against siege 3, Oracle 37 | 8% | 79K | 64K | ||||||||
| 4 | 295K | 73.5K | 146w 4d 00h 00m 00s> 2 Year(s) | Killer offense against siege 4, Oracle 37 | 13% | 180K | 80K | ||||||||
| 5 | 350K | 110K | 217w 5d 00h 00m 00s> 4 Year(s) | Killer offense against siege 5, Oracle 38 | 18% | 405K | 99.5K | ||||||||
| 6 | 415K | 165K | 323w 1d 00h 00m 00s> 6 Year(s) | Killer offense against siege 6, Oracle 38 | 25% | 910K | 125K | ||||||||
| 7 | 485K | 245K | 479w 6d 00h 00m 00s> 9 Year(s) | Killer offense against siege 7, Oracle 39 | 34% | 2.05M | 155K | ||||||||
| 8 | 585K | 360K | 712w 4d 00h 00m 00s> 13 Year(s) | Killer offense against siege 8, Oracle 39 | 45% | 4.65M | 195K | ||||||||
| 9 | 775K | 535K | 1 058w 2d 00h 00m 00s> 20 Year(s) | Killer offense against siege 9, Oracle 40 | 58% | 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) | Killer offense against siege 10, Oracle 40 | 75% | 75% | 24M | 42.82M | 290K | 1.34M |
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