You need to be attuned to the Syriusz Czarny spellbook to be able to cast this spell.
While incantating a spell, you raise your hand up. A giant spiky projectile made of magical energy appears behind you. As you point the direction, the projectile launches that way.
Said projectile is 5 feet wide and can travel for 120 feet until dissapearing, or hitting object considered as solid or full cover (for example: wall).
Each creature in the line must make a Dexterity saving throw. A creature takes 4d10 piercing damage on a failed save, or half as much damage on a successful one.
At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, you can summon another projectile for each slot level above 2nd. The effect just multiplies the damage for each projectile.