Sidhelien Bow (Reversible)

When a wizard casts this spell upon a non-magical short bow, long bow, or crossbow, the weapon gains a +1 attack bonus. The spell takes effect when the first shot is fired and then lasts for three rounds, plus one round per level of the caster. The first shot must be fired within 24 hours of casting or the enchantment is lost. The bow's bonus alone does not enable archers to hit creatures that can be attacked only by magical weapons; magical arrows are needed as well. When this spell is cast by a Sidhelien wizard, the target bow may be magical or non-magical, and gains a +1 bonus to attacks and damage.

Multiple spells can be cast upon a single bow to extend the duration of the enchantment. Doing so does not create additional attack bonuses or extend the 24-hour limit.

The reverse of this spell, decrepit bow, makes a non-magical bow suffer a -1 attack penalty. When cast by a Sidhelien wizard, a decrepit bow enchantment causes -1 penalties to attack and damage rolls.

The material component for both versions is a thread from a silkworm.