Tenser's Hunting Hawk

When this spell is cast upon an arrow, the missile gains a special dweomer that changes the arrow into a hunting hawk as the arrow leaves the bow.

The hawk's first strike is a swooping attack, striking at +2 bonus to hit with its claw attacks inflicting double damage, but no beak attack is allowed. Thereafter, the hawk continues to attack opponents as the caster orders, for one round per level of experience of the caster, or until the hawk is destroyed.

If a magical arrow has hunting hawk cast upon it, then the hawk retains whatever magical bonuses the arrow had, including attack or damage bonuses, so a hawk formed from an arrow +2 will have a +2 bonus to all attack and damage rolls. An arrow of slaying cannot be affected by the spell. When the spell's duration ends, the affected arrow disappears permanently.

The material component is a wing feather from a hawk.