This is high budget effectively a 10 link impale setup. Perfect Dancing Sword provides 2 impale buffs to nearby allies.
0:00 Eater of Worlds
0:57 Maven
4:47 Uber Elder
7:33 Map clearing
My PoB: https://pobb.in/ehI0DP6i8TSX
The actual dmg numbers are way higher than PoB is showing.
In conclusion, a fun off meta spectres to mess around, if you have the currency to get them up and running.
Corpse is dirt cheap, might as well get all perfect versions.
https://poedb.tw/us/Perfect_Dancing_Sword#PerfectDancingSwordAnimatedSwordHigh_