Numbers

The rolling numbers are just as important as the portraits. During normal combat as the DMW spins and stops if certain numbers are lined up you gain special status.

666: All attacks become critical hits for 20 seconds
555: Physical Guard for 15 seconds
444: 0 AP Consumption
333: Magic Guard for 15 seconds
222: 0 MP Consumption
111: Invincibility for 15 seconds
77*: 0 MP Consumption for 15 seconds
7*7: Physical Guard for 15 seconds
*77: Magical Guard for 15 seconds
7**: 0 AP Consumption for 12 seconds
7: 0 MP consumption for 12 seconds
**7: Endurance for 20 seconds

The big benefits come from matching numbers in modulating phase.

777: Zack levels ups + Invincibility for 15 seconds
2 same (not 7): 1 level up for equipped # materia
3 same (not 7): 2 levels up for quipped # materia