Heroes

Each dominion can select one hero that gains experience and levels up, increasing a passive bonus based on its class.

A hero gains 1 XP per acre gained from invasion, 2 XP per successful info operation (excluding bots), 4 XP per successful black operation, and 6 XP per successful war operation.

A hero loses 1 XP per acre lost from invasion, however this loss cannot exceed the XP required to maintain its current level.

A hero can be retired and replaced with another. The new hero will start with XP equal to half that of its predecessor.

Alchemist Platinum Production
Architect Construction Cost
Blacksmith Military Cost
Engineer Invest Bonus
Healer Casualties
Infiltrator Spy Power
Sorcerer Wizard Power

More information can be found on the wiki.

Hero Bonuses

Level XP Alchemist Architect Blacksmith Engineer Healer Infiltrator Sorcerer
1 100 0.20% -1.20% -0.25% 0.60% -1.00% 2.00% 2.00%
2 300 0.40% -2.40% -0.50% 1.20% -2.00% 4.00% 4.00%
3 600 0.60% -3.60% -0.75% 1.80% -3.00% 6.00% 6.00%
4 1000 0.80% -4.80% -1.00% 2.40% -4.00% 8.00% 8.00%
5 1500 1.00% -6.00% -1.25% 3.00% -5.00% 10.00% 10.00%
6 2250 1.20% -7.20% -1.50% 3.60% -6.00% 12.00% 12.00%
7 3000 1.40% -8.40% -1.75% 4.20% -7.00% 14.00% 14.00%
8 3750 1.60% -9.60% -2.00% 4.80% -8.00% 16.00% 16.00%
9 4750 1.80% -10.80% -2.25% 5.40% -9.00% 18.00% 18.00%
10 6000 2.00% -12.00% -2.50% 6.00% -10.00% 20.00% 20.00%
11 7750 2.20% -13.20% -2.75% 6.60% -11.00% 22.00% 22.00%
12 10000 2.40% -14.40% -3.00% 7.20% -12.00% 24.00% 24.00%