You call forth the magma deep within the earth, it cause a rift of magma in a 120x20 ft. line.
Once the Spell ends, the magma hardens, any creature that perishes is cooled inside the hot lava.
You summon magma from deep within the earth, creating a blazing rift 120 feet long and 20 feet wide. When the spell ends, the magma hardens, encasing any perished creatures in solidified lava.