If you use it with blood, you can use the z, then use the 2 crits, then press z again to stun, and you get a free 3rd crit. Someone said it did 3 bars, which is wild. What I do is I use strata strike into z into 2 crits into the z stun into the last crit.
I don’t know if you noticed but in the grip animation not only are you waving by you are smooshing their face with your foot you can see it move from side to side