Battle Harmony: Yin is a 
Grand Cathay passive ability.
There must be balance in all things: dark and light, moon and sun, female and male.
Effect[]
Passive Ability- Augment
- Speed: +4% (up to +8%)
- Reload Skill: +12 (up to +24)
- Leadership: +4 (up to +8)
- Duration:
- Enabled if: Yang unit nearby
- Activates when within 60 metres of a Yang unit.
- Effect intensity increases by highest nearby Hamony multiplier unit.
Units with Battle Harmony: Yin[]
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|---|---|
| Category | Unit |
 Missile Infantry
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 Monsters & Beasts
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 Flying War Machines
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 Artillery & War Machines
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