Was that like sparkles?

You charge your hands with electrical energy and touch a creature. If the creature has 0 hitpoints it becomes stable. If the creature has any hitpoints you can choose to stun, the creature must make a Constituiton saving throw. On a failed save it is stunned for 1d4*6 seconds.This spell has no effect on undead or constructs.

The spell’s stun time increases when you reach 5th level (1d6), 11th level (1d10), and 17th level (1d12).