Watery Grave [Secret Lair Drop Series] Plains Island Swamp It is not legal for

It is not legal for constructed play

This mana can't be spent to pay generic mana costs

and he survived a full day after that

Set: March of the Machine: The Aftermath Type: Legendary Creature — Orc Efreet Rarity: Rare Cost: {3}{R}{R} At the beginning of your upkeep

If the Phyrexian won that event

Watery Grave [Secret Lair Drop Series] Plains Island Swamp It is not legal forSet: Secret Lair Drop Series Type: Land Island Swamp Rarity: Rare ({T}: Add {U} or {B}.) As Watery Grave enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped. "Aye, ships go missing in the Stormwreck Sea all the time. That's why we don't call it the Calmsafe Current." Captain Lannery Storm