Bjork Horn Shofar:

Wielder may curse (or bless) a character that is already affected by a curse (or bless) spell, up to two simultaneous curse (or bless) effects instead of the default of one. So long as both curses (or blesses) relate to warfare, dueling, contested checks, or opposed checks. When this artifact is unequipped, the default resolution for simultaneous curses (or blesses) is used, as per those spells' descriptions. The wielder may expend this artifact's charges to reduce the cost/complexity of curse or bless spellcasts if their effects are within the previously described domains: Spend 1 charge to reduce the complexity of Curse or Bless by 1 tier for one session. Spend 1 charge to halve the cost of one spellcast of Curse or Bless for one session (maximum 1 use per spellcast). This artifact may gain charges in the following ways: For defeating a wielder-cursed nation or character in war or duel (respectively): gain 1 charge per three upkeep worth of curses on that nation/character. For succeeding on an MRP to benefit another wielder-blessed nation or character: gain 1 charge per three upkeep worth of blesses on that nation/character. The total roll on the MRP must be at least as high as the highest tier blessing's base complexity. Additional Transcendent Forge Effect: Spend 1 charge to re-roll a curse (or bless) spell casting roll that has malfunctioned or failed. This artifact is considered empowered for any mechanics that interact with such terminology. It may not be empowered by any other source save a wish. Charges: 3/4