Eldritch Flame

Your weapon, or the ammunition you fire, become wreathed in eldritch fire. You deal an additional 1d6 fire damage whenever you hit with a weapon attack until your next turn. On each subsequent turn until the spell ends, you can use a bonus action to ignite your weapons, or ammunition, until your next turn to deal the bonus damage.

At Higher Levels. When you cast this spell using a spell slot of 3rd or 4th level, you can maintain your concentration on the spell for up to 8 hours. When you use a spell slot of 5th level or higher, you can maintain your concentration on the spell for up to 24 hours.