Thousand Cuts

You scratch in the direction of a creature in range. Make a ranged spell attack. On hit, 2 separate shallow cuts appear on the targets body each dealing 1d4 force damage.

You may choose to expend a spell slot when casting this spell. For the next X turns (The level of spell slot expended), at the beginning of your turn, re-roll this spells damage and make additional cuts on the targets body. Casting this spell again by expending a spell slot ends the previous turn damage.

If the damage of this spell drops the target to 0 hp, its hp becomes 1 instead.

The number of cuts increases by 2 when you reach 5th level,  4 by the 11th level, and 6 by the 17th level.