Shoots X Fireball forwards AND backwards, inflicting X wound both ways.
Every point of Defense a unit has will block one Flare. Every unit wounded by Flare will use up one Flare.
Flare will first try to hit the FRONT ROW unit across. If successful, it will use its remaining Flare to hit the BACK ROW unit across. Those are the only two enemy units that can be hit.
An additional X Flare will try to hit your BAcK ROW unit.
4 units have the Flare ability: