Troop Defense with Hero During an Attack I

Hero Levels in total: 10 Upgrading from 3 to 4 Upgrade cost level: 3 ×2.4 Gold: 6 960 000 000 Chaos Elements: 744 000 000 Level by level 4: 6 960 000 000 gold · 744 000 000 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% · 5.5% · 6.5% · 8% · 10% · 12.5% · 15% · 18% · 22% · 25.5% Total at max: 125% Data: Viking Charts by Stars Night.