Synchro Device and Leveling Guide | Nikke: Goddess of Victory

Each level consumes a massive amount of battle cores; 10,000 per level. Leveling up Advanced synchro is the same as leveling up all your units currently in the synchro device. There is also a cap of how high you can level advanced synchro your units. The formula to increase said level is as follows. 1 LB = 1.33 levels.