Pax Celteara:

"Pax Celteara" >Gain +5% stability chance and -5% stability lose chance each session(up to a maximum of 30%) resetting on any Wars or Threats of war (MRPs), that you are the aggressor in. (Vassals benefit from 1/2 of this effect, if below neutral compliance they do not) >Gain +1 Vassal Slot >Vassals gain -5% Rebellion chance, -5% Disobey chance, and -5% demand concession chance at all complaisance levels (While at peace) >All benefits are reset if unequipped and suffer 3 stab loss to declare or join any offensive war with it equipped