Troop Offense with Hero During an Attack I

Hero Levels in total: 10 Upgrading from 3 to 4 Upgrade cost level: 6 ×3.7 Gold: 10 730 000 000 Chaos Elements: 1 147 000 000 Level by level 4: 10 730 000 000 gold · 1 147 000 000 Chaos The price depends on the order in which you study a branch: the first costs the base price, the seventh is four times as much. Bonus by level 2% · 7% · 7.5% · 10% · 12% · 14.5% · 18% · 22% · 27% · 30% Total at max: 150% Data: Viking Charts by Stars Night.