Weaponized life

Six darts of necrotic energy seep from your body like sweat. Each dart hits a creature of your choice that you can see within range. A dart deals 1d4+2 necrotic damage to its target. The darts all strike simultaneously, and you can direct them to hit one creature or several.
You sacrifice some of your health to create the darts. You take 5 points of necrotic damage, which can't be reduced in anyway. If you drop to 0 hit points, you die instantly and your body disintegrates. You can be restored to life only by means of true resurrection or a wish spell. By dying, you double your darts created. If the damage taken is greater than or equal to your currant hit points, you must die in order for any darts to be created by this spell.
At Higher Levels. When you cast this spell at a slot higher than 3rd level or higher, the damage taken increases by 5 and the spell creates two more darts, for each slot above 2nd.