## List of all possible bonus sources

- ARTIFACT
- ARTIFACT_INSTANCE
- OBJECT
- CREATURE_ABILITY
- TERRAIN_NATIVE
- TERRAIN_OVERLAY
- SPELL_EFFECT
- TOWN_STRUCTURE
- HERO_BASE_SKILL
- SECONDARY_SKILL
- HERO_SPECIAL
- ARMY
- CAMPAIGN_BONUS
- SPECIAL_WEEK
- STACK_EXPERIENCE
- COMMANDER
- GLOBAL
- OTHER