- You must start at the top and work your way down.
- You must have completed gathering and combining all the pieces for the book before you can train your heroes.
- I have numbered the boxes to make this simpler, it does not mean you have to follow the numbers precisely. Ex. after you have unlocked the first box, you may choose to go to 2 or 3.
- Training costs 40,000 , 40,000 and 10,000 . No is needed. Mercury will be used later.
How to get: Edit
- Chap. 15 Elite Ambush
- Drop rate is similar to hero stones, 1 book for raiding 3 times.
- Crafted by combining 50 Force of Thunder pieces
- Required Academy level 4 to research
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