Worldpurge

Sorcery

Return all permanents to their owners' hands. Each player chooses up to seven cards in his or her hand, then shuffles the rest into his or her library. Empty all mana pools.

The Aurora is not the only magic capable of remaking a world.

Worm Harvest

Sorcery

Put a 1/1 black and green Worm creature token onto the battlefield for each land card in your graveyard.

Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)

Worst Fears

Sorcery

You control target player during that player's next turn. Exile Worst Fears. (You see all cards that player could see and make all decisions for the player.)

Elspeth feared that her trespass into Nyx would not go unanswered.

Wrack with Madness

Sorcery

Target creature deals damage to itself equal to its power.

The skathul, spirits consumed by revenge, fester and seethe while looking for weak minds to assault.

Wrap in Flames

Sorcery

Wrap in Flames deals 1 damage to each of up to three target creatures. Those creatures can't block this turn.

"Our pyromancer's flames may not have killed them, but they bought us the time we needed."
-The War Diaries

Wrath of God

Sorcery

Destroy all creatures. They can't be regenerated.

Wreak Havoc

Sorcery

Wreak Havoc can't be countered by spells or abilities.

Destroy target artifact or land.

Wrench Mind

Sorcery

Target player discards two cards unless he or she discards an artifact card.

What is the sound of one head snapping?

Wretched Banquet

Sorcery

Destroy target creature if it has the least power or is tied for least power among creatures on the battlefield.

"The meek inherit nothing."
-Sedris, the Traitor King

Write into Being

Sorcery

Look at the top two cards of your library. Manifest one of those cards, then put the other on the top or bottom of your library. (To manifest a card, put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

Wurmcalling

Sorcery

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)

Put an X/X green Wurm creature token onto the battlefield.

Yamabushi's Storm

Sorcery

Yamabushi's Storm deals 1 damage to each creature. If a creature dealt damage this way would die this turn, exile it instead.

Yawgmoth's Will

Sorcery

Until end of turn, you may play cards from your graveyard.

If a card would be put into your graveyard from anywhere this turn, exile that card instead.

Yawning Fissure

Sorcery

Each opponent sacrifices a land.

The mapmaker scowled. He sighed, unrolled his parchment, and painted a large black blob where the Eternal Meadow was once marked.

Zombie Apocalypse

Sorcery

Return all Zombie creature cards from your graveyard to the battlefield tapped, then destroy all Humans.

"There will come a day so dark you will pray for death. On that day your prayers will be answered."
-Minaldra, the Vizag Atum

Zombify

Sorcery

Return target creature card from your graveyard to the battlefield.

"The first birth celebrates life. The second birth mocks it."
-Mystic elder