Breakthroughs in healing remedies make it possible to save even more wounded warriors. Upgrading this Knowledge increases the Infirmaries’ capacity.
| Level | Gold | Soul Shard | Time | Requirements | Infirmary Capacity | Influence | Hero’s Experience |
| 1 | 66.5K | 13.5K | 26w 2d 00h 00m 00s | Troop Defense When Defending Towns I 1, Oracle 36 | 1% | 12.5K | 31K |
| 2 | 105K | 20K | 39w 1d 00h 00m 00s | Troop Defense When Defending Towns I 2, Oracle 36 | 4% | 27.5K | 39.5K |
| 3 | 140K | 29.5K | 8w 2d 00h 00m 00s | Troop Defense When Defending Towns I 3, Oracle 37 | 8% | 62K | 50K |
| 4 | 175K | 43.5K | 86w 1d 00h 00m 00s> 1 Year(s) | Troop Defense When Defending Towns I 4, Oracle 37 | 12% | 140K | 63K |
| 5 | 210K | 64.5K | 127w 6d 00h 00m 00s> 2 Year(s) | Troop Defense When Defending Towns I 5, Oracle 37 | 16% | 315K | 79K |
| 6 | 245K | 96K | 189w 5d 00h 00m 00s> 3 Year(s) | Troop Defense When Defending Towns I 6, Oracle 38 | 21% | 710K | 99.5K |
| 7 | 285K | 145K | 281w 6d 00h 00m 00s> 5 Year(s) | Troop Defense When Defending Towns I 7, Oracle 38 | 27% | 1.65M | 125K |
| 8 | 345K | 215K | 418w 3d 00h 00m 00s> 8 Year(s) | Troop Defense When Defending Towns I 8, Oracle 38 | 33% | 3.65M | 155K |
| 9 | 455K | 315K | 621w 2d 00h 00m 00s> 11 Year(s) | Troop Defense When Defending Towns I 9, Oracle 39 | 41% | 8.2M | 190K |
| 10 | 695K | 465K | 922w 4d 00h 00m 00s> 17 Year(s) | Troop Defense When Defending Towns I 10, Oracle 39 | 50% | 18.5M | 235K |
| 2.72M | 1.41M | 2 721w 4d 00h 00m 00s> 52 Year(s) | 50% | 33.27M | 1.07M |
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