Blood Bolt

To cast this spell, take 1 hit point of damage. Arcane energy is infused into your blood to make a bolt of arcane force. Make a ranged spell attack against the target. On a hit, the target takes 1d10 force damage.

The spell creates more than one beam when you reach higher levels: two bolt at 5th level, three bolt at 11th level, and four bolt at 17th level. You can direct the beams at the same target or at different ones. Make a separate attack roll for each bolt. Increase the hp cost of each bolt by 1 past the first (EX: 3 hp total at level 5, 10 hp at 17)