Board Thread:Questions and Answers/@comment-7467815-20130506124256/@comment-8419059-20130521220758

if you max the second yagyu it will increase it by 1 level so if you take the time to do that and the 1% is worth it to you i guess it would be worth it because you really wouldn't need two unless the rest of your attack team have much lower attack values because you'd lose a skill proc by using him though like you said the second one could be a nice gain for tower events =]