The people whom your cavalry are defending don't stand idly by. They bring healing potions and horse fodder and perform ritual blessings so that your troops succeed in battle. Upgrading this Knowledge increases the health of your cavalry during defense.
| Level | Gold | Soul Shard | Time | Requirements | Cavalry health during defense | Influence | Hero’s Experience |
| 1 | 105K | 21K | 41w 3d 00h 00m 00s | Cavalry health against siege 1, Oracle 36 | 1% | 15.5K | 41K |
| 2 | 160K | 31.5K | 61w 3d 00h 00m 00s> 1 Year(s) | Cavalry health against siege 2, Oracle 36 | 4% | 35K | 51K |
| 3 | 220K | 46.5K | 91w 1d 00h 00m 00s> 1 Year(s) | Cavalry health against siege 3, Oracle 36 | 8% | 79K | 64K |
| 4 | 275K | 68.5K | 135w 2d 00h 00m 00s> 2 Year(s) | Cavalry health against siege 4, Oracle 37 | 13% | 180K | 80K |
| 5 | 330K | 105K | 200w 6d 00h 00m 00s> 3 Year(s) | Cavalry health against siege 5, Oracle 37 | 18% | 405K | 99.5K |
| 6 | 385K | 155K | 298w 2d 00h 00m 00s> 5 Year(s) | Cavalry health against siege 6, Oracle 37 | 25% | 910K | 125K |
| 7 | 450K | 225K | 63w 2d 00h 00m 00s> 1 Year(s) | Cavalry health against siege 7, Oracle 37 | 34% | 2.05M | 155K |
| 8 | 545K | 335K | 657w 6d 00h 00m 00s> 12 Year(s) | Cavalry health against siege 8, Oracle 38 | 45% | 4.65M | 195K |
| 9 | 720K | 495K | 976w 6d 00h 00m 00s> 18 Year(s) | Cavalry health against siege 9, Oracle 38 | 58% | 10.5M | 235K |
| 10 | 1.1M | 735K | 1 450w 4d 00h 00m 00s> 27 Year(s) | Cavalry health against siege 10, Oracle 38 | 75% | 24M | 290K |
| 4.29M | 2.22M | 3 977w 00h 00m 00s> 76 Year(s) | 75% | 42.82M | 1.34M |
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