Get 3 naked lvl 1 dwarf priest or wizz and you'll easily have 9 copies of something in the starting hand (in the case Walk)
My FS farm team often gets 6+ FS in the starting hand. I've seen 8 a few times. Don't remember if I've seen nine.
One of the walk is the default move, so you just need to draw an average of two other walks each which seems doable. But ok I withdraw the easily part as I did some quick maths and saw that there are only 25% of walks.
Haveing 8 FS in starthand happens to me sometimes. But yesterday I had 8 P. Hacks and Today i had 6 Nimble strikes
I ended turn 1 of a PvP battle last week with five of my six cards retained as Nimble Strike. Not nearly as impressive though.