Or you could use Great Ball in the hopes of hitting a V-Union, then discard it with another effect. But yes, Battle Compressor and Burnett are probably the best since you need all the parts in the discard pile to play it.No, as far as we know they are not considerd Basic or Evolution cards but a different category. The only real searchers that work are cards that mill parts like Battle Compressor or Prof. Burnett.