A new Nightmare World Boss event has arrived!

Boss: Battle Mage Vivian (7★)

Event time:
5/8 20:00 ~ 5/9 20:00 (UTC)
5/15 20:00 ~ 5/16 20:00 (UTC)
5/22 20:00 ~ 5/23 20:00 (UTC)
5/29 20:00 ~ 5/30 20:00 (UTC)

Seek out World Bosses, assemble a team to take them down, and bind their powers to yours.
👉 Read more about the World Boss here: https://goo.gl/pm6QgH