Aquan Quiver

At dawn each day, ten of the arrows in this quiver become enchanted with aquatic power. These arrows deal cold damage rather than piercing and deal 1 additional damage on a hit. Once per day when you fire an aquatic arrow, you can use your bonus action to cause the arrow to explode in a powerful torrent of water as it hits its target. Each enemy within 5 feet of the target must make a DC 12 Dexterity saving throw,taking 2d6 cold damage on a failed save, or half as much damage on a successful one.