Max Scattering Winds
Max RB Scattering Winds
Max Violent Strong Blast
Max Lightning Arrow
At least 1 point on normal Heaven's Justice, Fierce Wind and Spirit's Delicate
Main pushing skills: RB Scattering Winds, Lightning Arrow and Eye of Storm.
Fierce Wind is good for skill canceling and sometimes to push mobs back a bit, since it pierces.
Edge of Storm is really good for gathering mobs in a straight line, then shoot Calling Thunder to hold and use Eye of Storm to push everything to the end.
Spirit's Anger will make all your physical attacks and the skills in the WIND tab critical hits and lasts 45 seconds at max, I personally have this maxed because AEH 2 set + crits with 2k str = mobs die in 2 complete spams.
The arien in that video could have use the phoenix-nados after she push the mobs to the end, to keep them in place. Less melee, more spam. Max crit buff, the 2nd best skill in game, imo, after provoke.
And yes, arien has hax time in myth. Yuki-like. My ariens in guild was having a competition and for 3 room +mini boss, it only take them 5mins +, under 3500strg.