Sensei powers up your ninjas . It is exclusive to Facebook, and it is obtained by inviting Facebook friends to play. Sensei will be inactive if your friend is not playing permanently
Powerups from Sensei[]
50% health. This powerup increases a ninja's health by 50%.
50% strength This powerup increases a ninja's strength by 50%
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25% health, 25% strength This powerup increases a ninja's health and strength by 25%.
