This is my pVayl list for tournaments. It is
The strategy I use here is what I call the shredder speedbump. One the feat turn vayl activates first, upkeeps 1 chiller on Carnivean, other carni has chiller up kept by the succubs, pops feat, moves forward, cast incite, then cast rampager. Then she ends her turn. Then all her beast charge, kills stuff, and then from the feat they retreat. But I leave a few (4) shredders behind to block the way. Thus, the shredder speed bump. If you stay back and kill them, great because I just charge you again next round. Or, if you ignore them, they get free strikes off and get to chew on your caster. It's a win win for me.