it's called 3-5-2 v style. It's an attackive version of the 4-5-1 v style. to counter 4-5-1v I normally play 4-3N-2W-1.
I've not tested it but 3-3N-2W-2 might work? It is a risk though.
Maybe the butterfly might work? or 4-4-2. Sorry, it does give me a head ache. Hope I've gave some input
