So random lunch time thought for the day...3 Units of 20 Slaanesh Furies with a Slaanesh Herald with Loci Beguilement.
All have Fleet, and are Rending. 126 attacks on the charge and you're re-rolling the hits.
If only they weren't metal, and didn't cost $30.00 for 5 of them. I don't want to have to pay over $350.00 for 1/4 of my army.