BAM Legend is a rarity exclusive to Yu-Gi-Oh! BAM cards and are identified by (Series 1), (Series 2) or (Side Series). These cards have a cost of over 30 (before August 8, 2013) or are Series 1 Boss Cards.
After the new shop update on August 8, 2013, these cards have a cost of 23 or more, except Koumori Dragon, whose price is 11. Eradicator Epidemic Virus is currently the only card that has different forms as people get infected in the Contagion Event ending November 3, 2013.