Tibanna Gas Projector, Mk IV

As an action, a crewmember can create a wall of fire within 1200 feet. You can make the wall up to 300 feet on a side and 10 feet thick, or a spherical shell up to 150 feet in diameter, and 10 feet thick. The wall is opaque and lasts for up to a number of rounds equal to your ship's tier. Each ship that enters the fire or starts it turn there must make a Dexterity saving throw (DC = 8 + prof. bonus + ship's constitution modifier). On a failed save, a creature takes 5d8 fire damage, or half as much damage on a successful save. The fire ignites any flammable objects in the area. The effects of this feature last until the beginning of your next turn unless the crewmember uses a bonus action to maintain it. This feature can be used a number of times equal to your ship's tier (a minimum of once). All expended uses are regained when the ship recharges.