You read a word so powerful that it causes the immediate death of a creature within casting distance that you can see. If the creature you specify has an existing life value of 100 or less, it dies immediately. Otherwise the spell produces no effect.

Power Word Kill 5e

Level: 9th

Classes: Warlock, Sorcerer, Bard, Wizard

Casting Time: 1 Action

Range: 60 feet

Components: V

Duration: Instantaneous