Board Thread:Game Discussions/@comment-83.163.209.34-20141009183527/@comment-24438936-20141010211502

Did you join a new guild or did you get demoted from HC+ to Commander? There is a rank bonus for your rank in a guild.

Commanders have no bonus.

High Commanders have 5% bonus.

Guild Champions and Guild Sentinels have 7% bonus.

Guild Master has 10% bonus.

There's also guild element bonus.