Skills

Wrath
Increases your Damage by 5% per level.

Calm
Reduces Damage you take by 2.5% per Level.

Prosperity
Increases your Gold Gain by 5% per Level.

Learning
Increases your EXP Gain by 2.5% per Level.

Necromancy
Speeds up your Unit Production by 1% per Level that scales with stage you're in but isn't shown in UI.

Skeleton
Increases their Attack by 5% per Level and speeds up their generation time.

Zombie
Increases their Attack by 5% per Level and speeds up their generation time.

Wight
Increases their Attack by 5% per Level and speeds up their generation time.

Vampire
Increases their Attack by 5% per Level and speeds up their generation time.

Grim Reaper
Increases their Attack by 5% per Level and speeds up their generation time.

Bone Dragon
Increases their Attack by 5% per Level and speeds up their generation time.