Make the ring of conflict chargeable, with the enchantment serving as a timer: when worn, the enchantment slowly ticks back towards +0, and the ring ceases to provide conflict when it’s +0. Negatively enchanted rings tick up in enchantment towards +0. Being cursed doesn’t affect this, it only prevents you from removing the ring as is standard.

An alternate ending triggered by invoking a ring of conflict when within sight of all three Riders. You then take up your true identity as War and the other Riders congratulate you. Possibly tie this into the “break the Amulet” ending, in which case this would massively power you up but not end the game until some other condition had been met.

The ring of conflict autocurses when worn.

When you equip a ring of hunger or conflict (or regeneration), you get a message about feeling hungrier.

Conflict affects things in a radius. The ring of conflict is a chargeable item, affecting this radius. Wearing multiple rings of conflict stacks the effects.