Sacred Fire Give you an extra bonus effect when you burn it. In Every 8 Hour you need to Burn it and it gives a bonus that can be Traning speed, Research Speed, Production speed etc. and that effect CD time is 8 hour. It can help you in your development you just need to click on that building in every 8 hours.
Other than Bonus this building won’t provide anything.
Sacred Fire Bonus Includes
- All Resource Production Bonus + 5%
- ALL Troops Traning +3%
- Research Speed + 3%
- etc