*Spell Only, Must use Cheat Engine or other similar programs to "learn" spell*
Godly Power Word Kill is free cast, has a 120ft/36m range and is a guaranteed Kill.

*Spell Only, Must use Cheat Engine or other similar programs to "learn" spell*
Godly Power Word Multi-Kill is free cast, has a 120ft/36m range and is guaranteed to Kill up to 5 creatures.

*Spell Only, Must use Cheat Engine or other similar programs to "learn" spell*
Power Word Kill Uses 1 Action Point, has a 60ft/18m range and is a guaranteed Kill on creatures with or under 100 Hit Points.

*Spell Only, Must use Cheat Engine or other similar programs to "learn" spell*
Power Word Kill(Long Rest) Uses 1 Action Point once per Long Rest, has a 60ft/18m range and is a guaranteed Kill on creatures with or under 100 Hit Points.

Cheat Engine Cheat Table For Spells of Power Word Kill.
Tested and working on game version 4.1.1.3622274.
How To is under the DOCS tab and a video is under the VIDEOS tab.
Skip to 2:43 on the vid to see spells in action.