From the number you get the aura code: (6) Earth = Attack Rate (7) Wind = Defense Rate (8) Water = Mage Attack (5) Ice = Defense (1) Fire = Attack (4) Lightning = Criticial Rate
Above are the aura code effect You can choose the aura follow by this: 1 -> 1 -> 1 Earth (no.6) 1 -> 1 -> 2 Wind (no.7) 1 -> 2 -> 1 Water (no.8) 1 -> 2 -> 2 Ice (no.5) 2 -> 2 -> 1 Fire (no.1) 2 -> 2 -> 2 Lightning (no.4)