Free Buster Ce?

If your talking about a 3 star CE there already is one and its called The Crimson Black Keys, but if your talking event shop CE's then im not sure

Technically, this isn't a strictly a "buster" CE, but for the onigashima rerun, the Golden Sumo CE does boost overall attack by 15% at MLB which would make your buster cards considerably stronger :P .

Should be coming later in the year.