As an action, you can create this dark, cold oil. As an action, a creature can coat one weapon with the oil to cause it to freeze creatures it hits. For the duration, the weapon deals an extra 1d4 cold damage.

Alternatively, you can touch a quiver containing arrows or bolts, granting the ammunition pulled from it the same effect. The oil’s effect ends on a piece of ammunition when it hits or misses.

Augment

You can increase the damage by 1d4 for each additional catalyst expended