OMG! The Bosses are out of their dungeons!

With OMG Bosses! 9-card booster packs, you can elevate your MapleStory iTCGTM battles to a higher level of excitement when you boss around Bosses such as Pianus, Jr. Balrog, King Slime and other legends. Boss monsters have huge non-healing hit points and special abilities you can use as your character levels up.