5th level evocation You channel a burst of compressed energy and unleash it in a line 15 feet wide and 90 feet long. If the line comes into contact with a solid surface such as stone, ice or dirt, the beam starts to carve through the material at a rate of 5 feet at the start of your turn, tunneling in the direction of the line. Once the beam has carved through a surface, it leaves behind a tunnel that is 15 feet wide and 15 feet high. If you change the angle of the beam, whether through moving or by changing the beam's direction, the tunnel will change accordingly. If the beam is focused on a wall of force, globe of invulnerability, or similar magical construct, it can tunnel through if the beam is focused on a single line for at least 5 minutes at once. The first time a creature enters the beam on a round, it must make a Dexterity saving throw, taking 1d6 piercing damage and 1d6 force damage on a failed save, or half that on a successful one.
At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the length of the line increases the length of the line by 15 feet, the tunneling rate of the line by 5 feet, and both types of damage by 1d6 for every spell level above 5th.
"Light Beam" by Tracy GénéreuxPenetrate
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