Eruption

A a 10 foot wide, 10 foot long pillar of magma erupts from the ground. Any creatures caught in the blast must make a dexterity saving throw, taking 6d10+4 fire damage on a successful save, and half as much on a failed save. After the caster's turn ends, the lava erupted falls to the ground 5 feet around the area affected, those hit by the lava when it falls must make a dexterity saving throw, taking 1d6+3 damage on a failed save, half of that on a successful save.