Board Thread:Questions and Answers/@comment-26207862-20150315120947/@comment-25256642-20150316025215

Actually ,it's not 20% boost for pure type team and race advantage.Pure type team (5 cards of the same type) willl give you 5.0625% bonus,with race advantage ,it will be 1.15 x 1.05625=1.2082% or 20.82% total bonus.

You can see more details in here:

http://tcgapp.com/threads/comprehensive-guide-on-battle-bonuses.4339/