Warrior's Oath [Portal Three Kingdoms] Human As long as a card

As long as a card exiled with Duplicant is a creature card

Set: Zendikar Expeditions Type: Legendary Land Rarity: Mythic Colorless Eldrazi spells you cast cost {2} less to cast

Set: Ixalan Prerelease Promos Type: Artifact Rarity: Rare Cost: {5} As Vanquisher's Banner enters the battlefield

−2: Target player sacrifices a creature

Warrior's Oath [Portal Three Kingdoms] Human As long as a cardSet: Portal Three Kingdoms Type: Sorcery Rarity: Rare Cost: {R}{R} Take an extra turn after this one. At the beginning of that turn's end step, you lose the game. "If I fail, my head is yours." Warrior's oath common during the Three Kingdoms period