Warlords who have experienced long sieges can teach their warriors to synchronize their actions and instantly hide under a wall of shields. Upgrading this Knowledge increases your army's defense during defense against tier IV warriors.
| Level | Gold | Soul Shard | Time | Requirements | Increased Troop Defense in Defense Against Tier IV | Influence | Hero’s Experience | ||||||||
| 1 | 570K | 10.5K | 48w 6d 00h 00m 00s | Oracle 31, Reinforcement Troop Speed I 1 | 0,5% | 160K | 510K | ||||||||
| 2 | 710K | 15.5K | 72w 4d 00h 00m 00s> 1 Year(s) | Oracle 31, Reinforcement Troop Speed I 1 | 1% | 355K | 780K | ||||||||
| 3 | 850K | 23K | 107w 5d 00h 00m 00s> 2 Year(s) | Oracle 32, Reinforcement Troop Speed I 2 | 1,5% | 800K | 1.15M | ||||||||
| 4 | 990K | 34K | 159w 6d 00h 00m 00s> 3 Year(s) | Oracle 32, Reinforcement Troop Speed I 3 | 2% | 1.85M | 1.55M | ||||||||
| 5 | 1.15M | 50K | 237w 3d 00h 00m 00s> 4 Year(s) | Oracle 33, Reinforcement Troop Speed I 4 | 2,5% | 4.1M | 2.1M | ||||||||
| 6 | 1.3M | 74.5K | 352w 4d 00h 00m 00s> 6 Year(s) | Oracle 33, Reinforcement Troop Speed I 4 | 3% | 9.2M | 2.7M | ||||||||
| 7 | 1.45M | 115K | 523w 4d 00h 00m 00s> 10 Year(s) | Oracle 34, Reinforcement Troop Speed I 5 | 3,5% | 21M | 3.5M | ||||||||
| 8 | 1.7M | 165K | 777w 3d 00h 00m 00s> 14 Year(s) | Oracle 34, Reinforcement Troop Speed I 6 | 4% | 47M | 4.45M | ||||||||
| 9 | 2.15M | 245K | 1 154w 2d 00h 00m 00s> 22 Year(s) | Oracle 35, Reinforcement Troop Speed I 7 | 4,5% | 110M | 5.6M | ||||||||
| 10 | 3.1M | 13.97M | 365K | 1.1M | 1 714w 1d 00h 00m 00s> 32 Year(s) | 5 148w 3d 00h 00m 00s> 98 Year(s) | Oracle 35, Reinforcement Troop Speed I 10 | 5% | 45% | 240M | 434.47M | 7M | 29.34M |
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