Hail of Arrows

Oracle Text

Hail of Arrows deals X damage divided as you choose among any number of target attacking creatures.

Card Rulings

6/1/2005 You choose how the damage will be divided among the target creatures at the time you cast Hail of Arrows. Each target must be dealt at least 1 damage. If any of those creatures becomes an illegal target before Hail of Arrows resolves, the division of damage among the remaining creatures doesn’t change.