So, in the new 2024 PHB, Power Word Kill will not simply fail if the target has more than 100 HP. Now, if they have more than 100 HP, it will still inflict 12d12 psychic damage
Warlock. I'll admit that if not Artificer I was Expecting something Like Wizard Necromancer while reflavoring the different spells as you using various devices but this is probably better, maybe.