I think it was something like 7C or something. Anything numbered disk except 1 or 6 (1 because of its off-balanced nature, 6 because it's light) combined with Glaive or Cross should do the trick. 8 might actually be a good choice, since 8 usually has burst issues compared to disks like 7 but aB could make that a strength with this "reconstruction" ability.
Just pray you don't wind up against either Longinus, Drain Fafnir, or a left-spinning Spriggan when you use it.
Also, I got myself one of the old HMS beys today, and boy did I miss these little guys. I'm definitely gonna have to try and find more of them.
Cincinnati-based Organizer, and owner of every single currently released TT Burst bey part in at least one color. Hard to think of anything I don't have from MFB either...