World Beyblade Organization by Fighting Spirits Inc.

Sr.0B.Ds
(Spriggan Requiem . 0 Bump . Destroy)

Sr.0B.At. is best defence Combo
Sr.0.Br. is a good Stamina Combo

Spriggan Requiem is god of all types.
Attack :- Sr.7M.Ds
Defense :- Sr.7/0B.At
Stamina :- Sr.G.Br (I consider using a single disk instead of a number disk without a frame sometimes)

Why don't Bladers ever look at Winning Combinations at WBO Organized Play Events 

Some videos on requiem

Sr 0B/7 Br

Sr 0 b bearing

Sr.0B.t, Has good teeth, has great atk and stamina, and is a good color combo.