Whenever a player plays a spell that counters a spell that has been played or a player plays a spell that comes into play with counters, that player may counter the next spell played or put an additional counter on a permanent that has already been played, but not countered.

Enchant your library

Enchanted library is an artifact creature on the battlefield with power and toughness each equal to the number of cards in it. It's still a library.

If enchanted library would leave the battlefield, exile Animate Library instead.

Destroy target silver-bordered or acorn permanent in any game you can see from your seat.

Trample

Whenever a player casts a spell, put a chip counter on its mana value.

B-I-N-G-O gets +9/+9 for each set of three numbers in a row with chip counters on them.

As B.O.B. enters the battlefield, create four 1/1 blue Beeble creature tokens.

The number of loyalty counters on B.O.B. is equal to the number of Beebles you control. (Create or sacrifice Beebles whenever B.O.B. gains or loses loyalty.)

+1: Up to X target Beebles can't be blocked this turn, where X is the number of cards in your hand.

-1: Draw a card.

Spells you cast cost {1} less to cast.

You must speak in a voice other than your normal voice.

When you speak in your normal voice, sacrifice Bronze Calendar.

As Charm School enters the battlefield, choose a color and balance Charm School on your head.

Prevent all damage that would be dealt to you by sources of the chosen color.

When Charm School falls off your head, sacrifice Charm School.

If Cheatyface is in your hand, you may sneak Cheatyface onto the battlefield. If an opponent catches you right away, that player may exile Cheatyface.

Flying

Cast this spell only if there are three or more players in the game.

Whenever a player casts a spell, each of that player's opponents may discard a card. If they do, counter that spell.

When Clocknapper enters the battlefield, choose beginning phase, precombat main phase, combat phase, postcombat main phase, or ending phase. Steal that phase from target player during their next turn. (That phase occurs as though it's your turn instead.)

Whenever a player casts a spell without asking your permission while casting it, counter that spell.

When a player asks you permission to cast a spell and you refuse, counter that spell and sacrifice Common Courtesy.

At the beginning of each opponent's upkeep, that player moves a permanent they control to touch Cramped Bunker and no other permanents. If the player can't, destroy each permanent they control that isn't touching Cramped Bunker, then sacrifice it.

Enchant creature

Curse of the Fire Penguin consumes and confuses enchanted creature.

Trample

When this creature dies, return Curse of the Fire Penguin to the battlefield.

{0}: Return Deadhead from your graveyard to the battlefield. Activate only if an opponent isn't touching their hand (of cards).

Squirrellink (Damage dealt by this creature also causes you to create that many 1/1 green Squirrel creature tokens.)

Creature tokens you control are Squirrels in addition to their other creature types.

Other Squirrels you control get +1/+1.

{T}: Choose target spell or ability that targets a permanent you control. Then ask a person outside the game if the story of what will happen makes sense. If they say no, sacrifice Flavor Judge and counter that spell or ability.

At the beginning of your upkeep, you may ask target player a yes-or-no question. If you do, that player answers the question truthfully and abides by that answer if able until end of turn.

Roll a six-sided die. If you roll a 1, Goblin Tutor has no effect. Otherwise, search your library for the indicated card, reveal it, put it into your hand, then shuffle.

2 -- A card named Goblin Tutor

3 -- An enchantment

4 -- An artifact

5 -- A creature

6 -- An instant or sorcery

All graveyards are also your graveyards.

Graveyard Busybody's power and toughness are each equal to the number of cards with flavor text in your graveyards.

Combined, enchanted, and equipped creatures you control have menace.

{3}{B}{R}, {T}: Put two target creature cards from graveyards onto the battlefield combined into one creature under your control. (Its power is equal to their total power, its toughness is equal to their total toughness, and it has their names, mana costs, types, text boxes, etc.)

As Handcuffs enters the battlefield, choose a player.

When the chosen player's hands aren't touching each other, sacrifice Handcuffs and that player sacrifices three permanents.

As Hangman enters the battlefield, secretly note a word with six to eight letters.

{1}: Target player who doesn't control Hangman guesses the noted word or an unguessed letter in that word. If they guess wrong, put a +1/+1 counter on Hangman. Any player may activate this ability.

When a player guesses the noted word or all of its letters, sacrifice Hangman.

You have ten seconds to look at and rearrange the cards in your library. At the end of those ten seconds, if you're touching one or more of those cards, shuffle.

When you speak in non-rhyming sentences, sacrifice I'm Rubber, You're Glue.

Say "I'm rubber, you're glue. Everything bounces off me and sticks to you": Change the target of target spell or ability that targets only you.

(This creature has INFINITE POWER.)

{T}: Roll a six-sided die. This ability has the indicated effect.

1 -- Sacrifice Jack-in-the-Mox and you lose 5 life.

2 -- Add {W}.

3 -- Add {U}.

4 -- Add {B}.

5 -- Add {R}.

6 -- Add {G}.

{4}: Search your library for a card, put that card into your hand, then shuffle.

As Keeper of the Sacred Word enters the battlefield, choose a word.

Whenever an opponent says the chosen word, Keeper of the Sacred Word gets +3/+3 until end of turn.

Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. If you sang a song the whole time you were searching and shuffling, you may untap that land.

Ban a card other than a basic land card for the rest of the match. (All cards with that name in any zone or sideboard are removed from the match.)

When Mine, Mine, Mine! enters the battlefield, each player puts their library into their hand.

Players have no maximum hand size and don't lose the game for drawing from an empty library.

Each player can't cast more than one spell each turn.

When Mine, Mine, Mine! leaves the battlefield, each player shuffles their hand and graveyard into their library.

When Ol' Buzzbark enters the battlefield, roll X six-sided dice onto the battlefield from a height of at least X inches. For each die, put a number of +1/+1 counters equal to the result on each creature you control that die is touching. For each die, Ol' Buzzbark deals damage equal to the result to each creature an opponent controls that die is touching.

Creature cards in graveyards can attack and block as though they were on the battlefield, can block or be blocked only by creature cards in graveyards, are Zombies in addition to their other types, and have undeathtouch. (If they would deal damage to a creature card, exile that creature card instead.)

Creature cards in your graveyard have haste.

Phoebe, Head of S.N.E.A.K. can't be blocked by creatures with flavor text.

{2}{U}{B}: Phoebe permanently steals target creature's text box. (That creature loses all rules text, flavor text, and watermarks. This creature gains them.)

{3}, {T}: Spin Pointy Finger of Doom in the middle of the table so that it rotates completely at least once, then destroy the closest permanent the finger points to.

Destroy target nonartifact, nonland permanent that doesn't share a color with clothing worn by its controller.

Each player plays with the top card of their library held against their forehead, revealed to each other player.

Each player sacrifices all permanents that are rare or mythic rare, then each player reveals their hand and discards all cards that are rare or mythic rare.

State-based actions don't apply to you or other permanents you control. (You don't lose the game due to having 0 or less life or drawing from an empty library. Your creatures aren't destroyed due to damage or deathtouch and aren't put into a graveyard due to having 0 or less toughness. Your planeswalkers aren't put into a graveyard if they have 0 loyalty. You don't put a legendary permanent into a graveyard if you control two with the same name. Counters aren't removed from your permanents due to game rules. Permanents you control attached or combined illegally remain on the battlefield. For complete rules and regulations, see rule 704.)

When Split Screen enters the battlefield, shuffle your library and deal it into four libraries. If anything refers to your library, choose one of your libraries for it.

Play with your libraries' top cards revealed.

When Split Screen leaves the battlefield, shuffle your libraries together.

"Until end of turn" and "this turn" effects don't end.

Roll a six-sided die. Strategy, Schmategy has the indicated effect.

1 -- Do nothing.

2 -- Destroy all artifacts.

3 -- Destroy all lands.

4 -- Strategy, Schmategy deals 3 damage to each creature and each player.

5 -- Each player discards their hand and draws seven cards.

6 -- Repeat this process two more times.

Open a sealed Magic booster pack, reveal the cards, and put all creature cards revealed this way onto the battlefield under your control. They're Zombies in addition to their other types. (Remove those cards from your deck before beginning a new game.)

Create a 1/1 colorless Expansion-Symbol creature token for each different expansion symbol among permanents you control.

{2}{B/R}{B/R}, {T}: Roll a six-sided die. Create a number of 1/1 red Brainiac creature tokens equal to the result.

Tap three untapped Brainiacs you control: The next time you would roll a six-sided die, instead roll two six-sided dice and use the total of those results.

Triple strike (This creature deals first-strike, regular, and last-strike combat damage.)

{4}: You may put a creature card from your hand onto the battlefield.

The phases of each player's turn are reversed. (The phases are, in reverse order, ending, postcombat main, combat, precombat main, and beginning.)

As long as there are more than two players in the game, the turn order is reversed.

+1: Head to AskUrza.com and click +1.

-1: Head to AskUrza.com and click -1.

-6: Head to AskUrza.com and click -6.

As Water Gun Balloon Game enters the battlefield, each player puts a pop! counter on "0."

Whenever a player casts a spell, move that player's pop! counter up one.

Whenever a player's pop! counter hits "5," that player creates a 5/5 pink Giant Teddy Bear creature token and resets all pop! counters to "0."

Target player gains X life.

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Destroy target artifact.

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Counter target creature spell.

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Destroy target land.

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Destroy target enchantment.

As long as X is in X's owner's opponent's hand, X's owner may cast X and activate X's abilities. That opponent can't cast X and plays with their hand revealed.

{U}{B}, {T}: Put X into target opponent's hand.

{3}{U}{B}: You may play a land or cast a spell from the hand X is in. If you cast a spell this way, you cast it without paying its mana cost.

All creatures have haste.

Players play with the top card of their libraries revealed.

Noninstant, nonsorcery cards on top of a library are on the battlefield under their owner's control in addition to being in that library.

At the beginning of your upkeep, destroy all nonland permanents with the first name alphabetically among nonland permanents.