Battle Spirits Saga - Savior of Chaos (Set 4) Boosterbox The first appearance of powerful spirits with double symbols Nova and other past spirits from each color are back and stronger than ever Double symbol spirits have two symbols in the bottom right corner of the card. Those symbols allow these extremely powerful cards to not only count as two symbols for cost reduction but also reduce your opponents life by two with a single attack In addition to Nova, other spirits from each color who have shown up in BSS03 or earlier sets are also included as double symbol spirits
