Warrior's Oath [Portal Three Kingdoms] Ox The named card can't be

The named card can't be pitched

As Watery Grave enters the battlefield

Set: Arcane Rising Unlimited Edition: Unlimited Finish: Rainbow Foil Type: Resource Subtype: Gem Rarity: Fabled Class: Generic Legendary (You may only have 1 Eye of Ophidia in your deck

it's sacrificed when it enters the battlefield

Set: Champions of Kamigawa Type: Legendary Artifact — Equipment Rarity: Rare Cost: {3} Equipped creature gets +3/+1

Warrior's Oath [Portal Three Kingdoms] Ox The named card can't beSet: 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