Board Thread:Questions and Answers/@comment-9098788-20130626225457/@comment-24591383-20130626225836

If you have 3 daemon who reduces phantom defense, you have to it will be like this:

Daemon 1 =   -15

Daemon 2 =  -17

Daemon 3 =  -20

So, this three skills, together, will reduces the daemon's defense by (15+17+20) 52%

Sorry for the bad english o.o