After much discussion and communication, the decision was made that we will be making the change to Haku's Blessing's magic damage buff formula. Currently, Haku's Blessing provides a significant increase to only magic attack based on the attack power of her fans. Rather than encouraging party play, Maplers felt that Haku's Blessing discouraged Kanna from partying with physical based jobs.
It was made clear to us that this buff was too powerful and making it a party buff for other mage classes to abuse was for the lack of better words, broken.
When the original intention of the change to Haku's Blessing was first introduced to the community, the feedback was overall negative. It was communicated to us by our community, that what made Kanna a competitive class, was the fact that the class made already powerful mages even stronger with Haku's Blessing.
However, the decision to adjust Haku's Blessing formula was made after much review of the community feedback and discussions from our game teams. Ultimately, we will continue to review the state of Kanna after this change is made. Haku's Blessing's formula will be changed from multiplicative into a flat magic attack buff based on the magic attack modifier on Kanna's fans for every member in the party on 10/18/2017.
We will be sure to monitor all points pertaining to Kanna's performance in-game in conjunction with the community's feedback for additional discussions regarding the class' balance in the future.