Fire Emblem 0 (Cipher): Warblade of Heroes (英雄たちの戦刃 Eiyū-tachi no Ikusa Yaiba lit. Battle Blade of Heroes) is the first booster series released for the trading card game Fire Emblem 0 (Cipher). It was released by Nintendo alongside Fire Emblem Fates, Fire Emblem 0 (Cipher): War of Darkness, and Fire Emblem 0 (Cipher): Awakening. on June 25, 2015 in Japan.
The key art for the pack was illustrated by Yusuke Kozaki , with the characters taken from Fire Emblem: Shadow Dragon and Fire Emblem Awakening. In addition, a series of 15 promotional cards were released to complement the series, including two cards featuring male and female variants of Corrin from Fire Emblem Fates.
- Includes 100 cards (48 Normal, 24 High Normal, 16 Rare, and 12 Super Rare cards), and 14 alternate foil prints (SR+, R+).
- There are 64 new cards and 36 reprints from Fire Emblem 0 (Cipher): War of Darkness and Fire Emblem 0 (Cipher): Awakening.
- Every sealed box comes with 1 Corrin (Male) or 1 Corrin (Female) (the cards are the Cost 1 cards listed in the promo section at the bottom of the page). These cards are a preview of the Hoshido and Nohr cards from Booster Set 2: Soulful Flames of Light and Dark.
- Yusuke Kozaki
- Daisuke Izuka
- King Gonta
- Toshiyuki Kusakihara / Intelligent Systems
- Sachiko Wada
- Hisashi Momose
- See main article: Card List.