Pax Celteara:

Each session the wielder is not in an offensive war or has made a threat of war, the wielder gains a charge. For each charge, the wielder gains +5% Stability gain chance and −5% Stability loss chance, up to a maximum of 30%. Vassals benefit from half this effect if they are at Neutral or higher Compliance. All vassals gain −5% Rebellion chance, −5% Disobey chance, and −5% Demand Concession chance at all Compliance levels. The wielder gains +1 Vassal Slot. If the artifact is ever unequipped, it loses all charges. When being in any offensive war, if the artifact was equipped this session, the wielder suffers -3 stability and loses an artifact slot for 1d3 turns. Charges: 0/6