Fire Release: Flint Yagura Technique

Asuma throws his lighter on the ground in front of his opponent and expands the flame into a wall of fire. This can be used in conjugation with Wind Release: Whirlwind Fist to create the Fire Whirlwind Vortex Technique.

In Konoha Shinden: Steam Ninja Scrolls, it was noted to be a technique that "makes a small spark burst into a pillar of fire".

Trivia

 * is a shōgi tactic.