1 shot half a wb. after few sec 1 shot rest half.

i think mechanic is ripple effects. more dmg when more targets are hit. like AoE siege?
but it hits harder than final boss mechanic.
range and dmg is out of line.
rest of hero mobs in second stage are not like this.
check this mob plz.
at least give us some time to react. some kind of counter.