Premium Protection I
Decrease DMG taken by all Hero types
Max level: 10
Research levels
| Level |  Power |  Food |  Iron |  Coin |  Valor Badge | Base research time | Requirements |
|---|---|---|---|---|---|---|---|
| 1 | 4,000 | 2,282,900 | 2,282,900 | 6,848,700 | 320 | 16 hr 31 min |
|
| 2 | 8,600 | 2,967,800 | 2,967,800 | 8,903,300 | 400 | 1 day 4 hr 5 min |
|
| 3 | 13,200 | 2,967,800 | 2,967,800 | 8,903,300 | 400 | 1 day 4 hr 5 min |
|
| 4 | 19,300 | 5,193,600 | 5,193,600 | 15,580,800 | 520 | 1 day 20 hr 55 min |
|
| 5 | 25,400 | 5,193,600 | 5,193,600 | 15,580,800 | 520 | 1 day 20 hr 55 min |
|
| 6 | 32,100 | 6,232,300 | 6,232,300 | 18,696,900 | 640 | 2 days 19 hr 23 min |
|
| 7 | 38,800 | 6,232,300 | 6,232,300 | 18,696,900 | 640 | 2 days 19 hr 23 min |
|
| 8 | 47,700 | 11,218,200 | 11,218,200 | 33,654,500 | 800 | 3 days 22 hr 20 min |
|
| 9 | 56,600 | 11,218,200 | 11,218,200 | 33,654,500 | 800 | 3 days 22 hr 20 min |
|
| 10 | 67,100 | 15,705,400 | 15,705,400 | 47,116,300 | 960 | 5 days 12 hr 4 min |
|