https://www.youtube.com/watch?v=II1xptzxkEI
This is tightrope testing the ability (14:00)
The ability does it job against units standing still, doing nothing, asking to be hit...
It's not that overpowered but i think the time this ability is active definetely needs changing.
There's no need for a 2 min arty. I think moving this to 90sec is good and doesn't overnerf it.
It's countered really easly and it isn't like close the pocket where everything gets destroyed.
Simply decapturing the teritory should be enaugh to stop it from hitting you.
I also think it can only focus one point at a time, if i'm not mistaken.
I mainly think this is just an overreaction to the ability. It cost over 200ammo at the end. But i agree it shouldn't be so long.
I think the perfect fix to this is; lowering cost(around 175?), decreasing time (60-90s), leave cp as it is(10) and i would not overnerf the cooldown but you should definetly add one. Just
watch out for overnerfing abilities or overbuffing.
offtopic: early warning (recon) should be buffed.