Cavalry Offense with Hero Against Siege

Hero Levels in total: 10 Upgrading from 7 to 8 Upgrade cost level: 2 ×1.7 Gold: 13 770 000 000 Chaos Elements: 1 496 000 000 Level by level 8: 13 770 000 000 gold · 1 496 000 000 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 0.5% · 1.25% · 1.25% · 1.5% · 2% · 2.5% · 3% · 3.5% · 4.5% · 5% Total at max: 25% Data: Viking Charts by Stars Night.