Question about Beholder's Revenge (Post-BB patch DrK skill)

Not confirmed to hit multiple monsters. I saw in the video that it can only a single target.

The video above isn't exactly very revealing about how it works, but i remember it being able to hit 4 targets. I don't remember any change to revenge, like, ever, so... o.o

And how did I come to the conclusion about its attack rate? It attacks every 4 seconds at max (level 10), 1 min = 60 seconds. xD

I see a 5 at max, so assuming that's seconds it would attack 12 times. o.o 4 with CO, though.

Still 700% to even one target is a hefty amount of damage on top of what you're already doing.