Crystal Soul Spear

Through many years of research, it has been discovered that the soul resonates with crystals at a deep level, empowering the strength of soul sorceries. As an action you emit a large blast of soul energy that becomes cocooned within a jagged shell of crystal. In a 5ft wide, 100ft straight line, all targets must succeed a Dexterity saving throw. On a fail they take 5d12+ casting mod force damage and an additional 4d6 magic slashing damage. On a pass, targets take half damage.

At Higher Levels if you cast this spell with a spell slot above 5th, deal an additional 1d12 force damage and 1d6 slashing damage for every slot spent above the first.