Guild Wars 2

“Fire a black powder shot, blinding nearby foes with the smoke cloud.

Damage Damage: 61 (0.25)
Blind (2s): Next outgoing attack misses.
Number of Targets: 5
Pulses: 3"

I’ve looked everywhere and can’t find what pulses are.

Its a blanket term that GW2 (and other games) uses to denote one hit of a multi-hit AoE attack (or even a multi-hit buffing skill). A pulse is a single hit, and the number of pulses represents how many times that attack will hit over its duration.

A skill that pulses 3 times will hit enemies who stay in the field 3 times before the field disappears. Most skills “pulse” every second, but there are some that pulse less frequently.

That just means it will apply the blind 3 times.