Mizzium Mortar

Mizzium Bombard: You can expend 3 charges as
an action to launch a hail of molten projectiles in
a 20-foot-radius. 40-foot-high cylinder centered
on a point you can see within 60 feet of you. Each
creature in the area must make a DC l 5 DEX
saving throw. A creature takes 5d8 fire damage on
a failed save, or half as much damage on a
successful one.