New Cards New Dungeons Special & Seasonal Dragonbound & Dragon Caller, One-Shot Challenge (OSC)! 9/10 (Mon) 12:00am - 9/24 (Mon) 11:59pm JST New one-shot challenge for the Dragonbound & Dragon Caller revival!,… Read more #Dragonbound & Dragon Caller (DBDC) #One-Shot Challenge (OSC) Reni | Sep. 8, 2018. Comments are off.