Horn of Great Need:

This artifact contains 3 charges, upon reaching 0 this artifact is destroyed. The wielder of this artifact may expend 1 charge to summon a unit from this or any previous era that is not a custom or imperial unit unless they have access to such unit normally. These units may be summoned for the purpose of absorbing damage received in an attempted assassination or forced duel against the wielder. For each healthstate the wielder would receive, reduce the hp of a summoned unit by half. Units may be summoned at any point in the duel. If all three charges are spend defending the wielder from an assassination or forced duel the duel ends if the wielder reaches bedridden and the wielder may not die from the fight. Any units summoned this way are destroyed at the end of the duel even if they have HP left. These units may be summoned for the purpose of fighting within a way as well. These units to not count as a part of the wielder's total troop count. If the wielder expends 3 charges to summon 3 units in a single war, they may summon an additional unit. Any units summoned this way are destroyed at the end of the war session. Current charges: 3/3