Look for three Blaster Exclusive parallels - the Base Set Purple Spectrum parallel, #d to 199 and Skybox Premium Prospects Star Sapphires parallel, combined falling 1 per box on average, and the Base Set Blue Spectrum parallel, falling 5 per box on average. Additionally, collect the 97-98 Retros, a 50-card design variation featuring the top veterans and rookies from the Base Set. Each card in this collection sports a unique background featuring original artwork from the 1997-98 Metal Universe Base Set!