SD03, called Dan Bashin Deck: Brave Dragon of the Sun (馬神ダンデッキ 太陽の合体ドラゴン Bashin Dan Dekki: Taiyou no Bureivu Doragon), is the third starter deck of the trading card game and the basis for Dan Bashin's deck in Battle Spirits Brave. It was first released in Japan on September 10, 2010. This set included spirit, brave, magic, and nexus cards in red and blue. It introduced the card type Brave.
The set included a total of 40 cards with 17 different names: 9 C, 5 U, 2 R, and 1 M. It also included 15 core, a manual, and a playsheet.