I know what it does, I've been playing as a Black Iron tank with 119 poise for a while now. I understand that having 119 poise is a little bit of overkill. I also know that you only need 79 or so poise to be good for PvP and a poise of around 40 will prevent you from getting stunned from arrows in PvE.
But what is a good base line Poise stat for normal PvE? I switched my chest piece for a black cleric set because it fits well with my character concept and the duster looks bad ***. With the wolf ring, I'll have 88 poise with this set up. I'd like to switch up the wolf ring for ring of the first born in order to boost my miracles, but that would drop my poise to 48.