Mass Polymorph

Sorcery, 5U (6)

Exile all creatures you control, then reveal cards from the top of your library until you reveal that many creature cards. Put all creature cards revealed this way onto the battlefield, then shuffle the rest of the revealed cards into your library.

Illus. Christopher Moeller

Gatherer Card Rulings?, Legality?

• 8/15/2010: The creatures you exile with Mass Polymorph remain exiled for the rest of the game.
• 8/15/2010: If the number of creatures you exile is greater than the number of creature cards remaining in your library, you'll wind up revealing your entire library, putting all creature cards revealed that way onto the battlefield, then shuffling your library.
• 8/15/2010: All creatures you put onto the battlefield with Mass Polymorph enter the battlefield at the same time.
• 8/15/2010: Any abilities that trigger during the resolution of Mass Polymorph (such as a creature's enters-the-battlefield ability) will wait to be put onto the stack until Mass Polymorph finishes resolving. The player whose turn it is will put all of his or her triggered abilities on the stack in any order, then each other player in turn order will do the same. (The last ability put on the stack will be the first one that resolves.)

• Legal in Vintage (Type 1)
• Legal in Legacy (Type 1.5)
• Legal in Extended (Type 1.X)
• Legal in Classic (MTGO)
• Legal in Commander
• Legal in Modern

Polymorph

Sorcery, 3U (4)

Destroy target creature. It can't be regenerated. Its controller reveals cards from the top of his or her library until he or she reveals a creature card. The player puts that card onto the battlefield, then shuffles all other cards revealed this way into his or her library.

Illus. Robert Bliss

Gatherer Card Rulings?, Legality?

• 10/4/2004: If there are no creatures in the player's library, then the target creature is still destroyed, you see all the cards in that player's library, and then they shuffle and continue play.
• 10/1/2009: If the targeted creature is an illegal target by the time Polymorph would resolve, the entire spell is countered. Nothing else happens.
• 10/1/2009: If the targeted creature is indestructible, it's still a legal target -- it just isn't destroyed. The rest of Polymorph's effect happens as normal.
• 10/1/2009: If there are no creature cards in the player's library, all the cards in that library are revealed, then the library is shuffled. (The targeted creature remains destroyed.)
• 10/1/2009: A "creature card" is any card with the type Creature, even if it has other types such as Artifact, Enchantment, or Land. Older cards of type Summon are also Creature cards.

• Legal in Vintage (Type 1)
• Legal in Legacy (Type 1.5)
• Legal in Classic (MTGO)
• Legal in Commander
• Legal in Modern

Proteus Staff

Artifact, 3 (3)

{2}{U}, {T}: Put target creature on the bottom of its owner's library. That creature's controller reveals cards from the top of his or her library until he or she reveals a creature card. The player puts that card onto the battlefield and the rest on the bottom of his or her library in any order. Activate this ability only any time you could cast a sorcery.

Illus. Trevor Hairsine

Gatherer Card Rulings?, Legality?

• Legal in Vintage (Type 1)
• Legal in Legacy (Type 1.5)
• Legal in Classic (MTGO)
• Legal in Commander
• Legal in Modern

Riptide Shapeshifter

Creature — Shapeshifter 3/3, 3UU (5)

{2}{U}{U}, Sacrifice Riptide Shapeshifter: Choose a creature type. Reveal cards from the top of your library until you reveal a creature card of that type. Put that card onto the battlefield and shuffle the rest into your library.

Illus. Arnie Swekel

Gatherer Card Rulings?, Legality?

• Legal in Vintage (Type 1)
• Legal in Legacy (Type 1.5)
• Legal in Classic (MTGO)
• Legal in Commander

Spellshift

Instant, 3U (4)

Counter target instant or sorcery spell. Its controller reveals cards from the top of his or her library until he or she reveals an instant or sorcery card. That player may cast that card without paying its mana cost. Then he or she shuffles his or her library.

Illus. Stephen Tappin

Gatherer Card Rulings?, Legality?

• 2/1/2007: If the targeted spell can't be countered, it remains on the stack and the rest of Spellshift's effect continues to happen.
• 2/1/2007: If the revealed instant or sorcery card isn't cast, it gets shuffled back into the library.
• 2/1/2007: If there are no instant or sorcery cards in the player's library, the entire library is revealed and then shuffled.

• Legal in Vintage (Type 1)
• Legal in Legacy (Type 1.5)
• Legal in Classic (MTGO)
• Legal in Commander
• Legal in Modern

Thicket Elemental

Creature — Elemental 4/4, 3GG (5)

Kicker {1}{G} (You may pay an additional {1}{G} as you cast this spell.)

When Thicket Elemental enters the battlefield, if it was kicked, you may reveal cards from the top of your library until you reveal a creature card. If you do, put that card onto the battlefield and shuffle all other cards revealed this way into your library.

Illus. Ron Spencer

Gatherer Card Rulings?, Legality?

• 10/4/2004: The "if you do" means "if you choose to reveal cards". You still shuffle if you have no creature card in your library.

• Legal in Vintage (Type 1)
• Legal in Legacy (Type 1.5)
• Legal in Classic (MTGO)
• Legal in Commander