Warrior's Oath [Portal Three Kingdoms] Fighting [-20] and if it would die

and if it would die this turn

Set: Battlebond Type: Creature — Human Wizard Rarity: Rare Cost: {2}{U} When Spellseeker enters the battlefield

Set: Urza's Saga Type: Artifact Rarity: Rare Cost: {4} At the beginning of your upkeep

Set: Legends Type: Artifact Rarity: Rare Cost: {4} {3}

Set: Sun & Moon: Cosmic Eclipse Type: Fighting Rarity: Secret Rare Retreat cost: Colorless

Warrior's Oath [Portal Three Kingdoms] Fighting [-20] and if it would dieSet: 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