SRD5:Power Word Kill
From Dungeons and Dragons Wiki
|This material from the 5th edition SRD is published under the OGL|
Power Word Kill is a spell in 5th edition.
|Casting Time:||1 action|
|Casters:||Bard, Sorcerer, Warlock, Wizard|
You utter a word of power that can compel one creature you can see within range to die instantly. If the creature you choose has 100 hit points or fewer, it dies. Otherwise, the spell has no effect.