DESCRIPTION

You can imbue up to 50 arrows or bolts with one of the following traits: adamantine, silver, or cold iron. This allows the arrows or bolts to bypass damage reduction vulnerable to these traits. The projectiles affected by this spell must all be of the same kind, and they must be in a single quiver or similar container as a group. You must pick which trait you desire before casting the spell, and you cannot change it after mercurial arrow is cast.

The projectiles lose their transmutation once they are used or when the spell's duration expires.