Power Word Stun

Level & School
8th-level enchantment
Casting Time
Action
Range
60 feet
Components
V
Duration
Instantaneous
Classes
Bard, Sorcerer, Warlock, Wizard

You overwhelm the mind of one creature you can see within range. If the target has 150 Hit Points or fewer, it has the Stunned condition. Otherwise, its Speed is 0 until the start of your next turn.

The Stunned target makes a Constitution saving throw at the end of each of its turns, ending the condition on itself on a success.

Level & School
8th-level enchantment
Casting Time
Action
Range
60 feet
Components
V
Duration
Instantaneous
Classes
Bard, Sorcerer, Warlock, Wizard

You speak a word of power that can overwhelm the mind of one creature you can see within range, leaving it dumbfounded. If the target has 150 hit points or fewer, it is stunned. Otherwise, the spell has no effect.

The stunned target must make a Constitution saving throw at the end of each of its turns. On a successful save, this stunning effect ends.

Power Word Stun 5.5e 2024 vs. 5e 2014 edition differences

The 2024 version replaces the "no effect" clause with inflicting the Stunned condition directly, and grants the stunned target its Speed to 0 until the start of your next turn if above 150 HP. It also clarifies the saving throw ends the Stunned condition on a success, rather than ending a separate effect.