Volley of Arrows
From Wildermyth Wiki
Local archers are supporting you for this fight, tell them where to focus their fire. Archers can fire once every other turn.
The ability deals damage to all enemies in a 5x5 grid and pierces 1 armor. Each tile of a large enemy can be hit separately, adding damage. It counts as an attack from the hero who uses the ability, for flanking purposes.