A New Chapter Begins: Inverted World Chronicle!
First appearance of double color cards and new keyword effect Astral!

BSS05 marks the introduction of double color cards!
In this set, there are spirit, magic, and nexus cards of six color combinations:
red/purple, purple/yellow, yellow/white, white/green, green/blue, and blue/red.
Many of the double color cards feature a new keyword effect, Chain,
making it easy to construct multicolor decks and unlocking a brand-new way of fighting!