I'm telling you, don't bother with it.  

3x ATK when HP is 80% or less, 1.5x to all stats for Dark Att.; 3.5x ATK & reduces damage with 4+ Att.

Min Turns 0
Max Turns 0
Levels 0
Single Pair
HP 1.5x 2.25x
Attack 15.75x 248.06x
RCV 1.5x 2.25x
Shield 25.00% 43.75%