You may reveal this card from your opening hand. If you do, when each opponent casts their first spell of the game, counter that spell unless that player pays {1}. Flying Whenever an opponent casts a spell, counter it unless that player pays {1}.

Flash Flying When this creature enters, counter target spell. Put X +1/+1 counters on this creature, where X is that spell's mana value.

Flash When Ertai Resurrected enters, choose up to one — • Counter target spell, activated ability, or triggered ability. Its controller draws a card. • Destroy another target creature or planeswalker. Its controller draws a card.

Flash When this creature enters, you may counter target spell.

Flying Sacrifice this creature: Counter target instant or sorcery spell unless its controller pays {1}.

Ward {3} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {3}.) Channel — {2}{U}, Discard this card: Counter target spell or ability unless its controller pays {3}.

Flash When this creature enters, counter target spell.

Flash Flying Exploit (When this creature enters, you may sacrifice a creature.) When this creature exploits a creature, counter target spell, activated ability, or triggered ability.

Flash Flying When this creature enters, exile target spell with mana value 4 or less. When this creature leaves the battlefield, the exiled card's owner may cast that card without paying its mana cost.

Flash Flying When this creature enters, counter target spell with mana value X or less, where X is the number of Faeries you control.

{T}, Pay 1 life: Counter target white spell.

Flash When this creature enters, counter up to one target activated or triggered ability. If an ability of an artifact, creature, or planeswalker is countered this way, that permanent loses all abilities for as long as this creature remains on the battlefield. (Mana abilities can't be targeted.)

Flash Other Merfolk you control get +1/+1. Sacrifice a Merfolk: Counter target noncreature spell unless its controller pays {1}.

Flash (You may cast this spell any time you could cast an instant.) When this creature enters, counter target activated ability. (Mana abilities can't be targeted.) Whenever you cast a spell, you may return this creature to its owner's hand.

{U}{U}, Sacrifice a Wizard: Counter target spell. Morph {U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Flash When this enchantment enters, exile target spell. Your opponents can't cast spells with the same name as the exiled card. When this enchantment leaves the battlefield, return the exiled card to its owner's hand.

{B}{B}: Counter target green spell.

({W/U} can be paid with either {W} or {U}.) Whenever a player casts a noncreature spell, counter that spell. That player creates X 1/1 white and blue Bird creature tokens with flying, where X is the spell's mana value.

{G}{G}: Counter target black spell.

Whenever a player casts a spell, counter it unless that player pays {3}.

Raid — If you attacked this turn, you may pay {U} rather than pay this spell's mana cost. Counter target spell.

Counter target noncreature spell. Its controller creates two Treasure tokens. (They're artifacts with "{T}, Sacrifice this token: Add one mana of any color.")

Counter target artifact or enchantment spell.

Choose one — • Counter target spell. • Target player draws two cards. • Gain control of target nonland permanent with mana value 1 or less.

Counter target artifact spell.

Counter target creature or battle spell unless its controller pays {4}. If they do, you incubate 2. (Create an Incubator token with two +1/+1 counters on it and "{2}: Transform this token." It transforms into a 0/0 Phyrexian artifact creature.)

Spells you control can't be countered by blue or black spells this turn, and creatures you control can't be the targets of blue or black spells this turn.

Counter target spell. If that spell targets a commander you control, instead counter that spell, scry 2, then draw a card.

Choose one — • Counter target red spell. • Destroy target red permanent.

Counter target spell unless its controller pays {2}. Corrupted — Counter that spell instead if its controller has three or more poison counters.

Counter target spell. Madness {3}{U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Counter target spell.

Counter target colorless spell.

Counter target spell unless its controller pays {1} for each card in your graveyard. Madness {U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Counter target spell unless its controller pays {X}.

Counter target spell unless its controller pays {X}. Scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Counter target spell.

Choose two — • Counter target spell. • Return target permanent to its owner's hand. • Tap all creatures your opponents control. • Draw a card.

Choose one — • Prevent all combat damage that would be dealt this turn. • Regenerate target creature. • Counter target spell that targets you.

You may return an Island you control to its owner's hand rather than pay this spell's mana cost. Counter target spell unless its controller pays {1}.

If you control a commander, you may cast this spell without paying its mana cost. You may choose new targets for target spell or ability.

Counter target spell. Its controller mills three cards.

Counter target spell, activated ability, or triggered ability. (Mana abilities can't be targeted.)

As an additional cost to cast this spell, return a permanent you control to its owner's hand. Counter target spell.

Counter target spell with mana value 4 or greater.

Counter target spell. Draw a card.

As an additional cost to cast this spell, tap an untapped artifact you control or pay {1}. Counter target spell.

Counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Counter target spell. Scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Counter target spell. Its controller draws a card. Draw a card.

This spell costs {U} less to cast if an opponent cast two or more spells this turn. Counter target spell.

Counter target spell if it was kicked.

Counter target creature spell. Essence Backlash deals damage equal to that spell's power to its controller.

Counter target creature spell. Draw a card.

Counter target sorcery spell.

Counter target spell. Draw a card, then discard a card.

If you control a commander, you may cast this spell without paying its mana cost. Counter target noncreature spell.

Counter target instant spell.

Counter target red or green spell.

Counter target instant or sorcery spell unless its controller pays {1}. Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)

Buyback—Discard two cards. (You may discard two cards in addition to any other costs as you cast this spell. If you do, put this card into your hand as it resolves.) Counter target spell.

If it's not your turn, you may exile a blue card from your hand rather than pay this spell's mana cost. Counter target noncreature spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

You may pay 1 life and exile a blue card from your hand rather than pay this spell's mana cost. Counter target spell.

Counter target spell unless its controller pays {1}.

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.) Counter target spell.

This spell costs {1} less to cast if you control a Spirit. It also costs {1} less to cast if you control an enchantment. Counter target spell unless its controller pays {3}.

Choose one — • Counter target spell if it's red. • Destroy target permanent if it's red.

Counter target activated ability from an artifact, creature, enchantment, or land. That permanent's activated abilities can't be activated this turn. (Mana abilities can't be targeted.) Draw a card.

Choose one — • Counter target noncreature spell unless its controller pays {2}. • Izzet Charm deals 2 damage to target creature. • Draw two cards, then discard two cards.

Counter target spell unless its controller pays {1}. If you control a creature with flying, counter that spell unless its controller pays {4} instead.

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.) Counter target spell unless its controller pays {X}.

Replicate {U} (When you cast this spell, copy it for each time you paid its replicate cost. You may choose new targets for the copies.) Counter target spell unless its controller pays {2}.

You and target spell's controller bid life. You start the bidding with a bid of 1. In turn order, each player may top the high bid. The bidding ends if the high bid stands. The high bidder loses life equal to the high bid. If you win the bidding, counter that spell.

Counter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's mana value.

Counter target spell unless its controller pays {3}.

({U/P} can be paid with either {U} or 2 life.) Counter target spell with mana value 1.

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.) Counter target spell unless its controller pays {3}.

If an opponent cast three or more spells this turn, you may pay {0} rather than pay this spell's mana cost. Exile any number of target spells.

Counter target spell unless its controller pays {2}. Cycling {2} ({2}, Discard this card: Draw a card.)

Counter target instant or sorcery spell unless its controller pays {3}.

Choose three. You may choose the same mode more than once. • Counter target spell unless its controller pays {3}. • Return target creature to its owner's hand. • Draw a card.

This spell costs {2} less to cast if it targets a blue spell. Counter target spell unless its controller pays {3}.

Counter target noncreature spell.

Counter target spell. Cycling {2} ({2}, Discard this card: Draw a card.)

Counter target spell or ability that targets a permanent you control. This spell costs {7} less to cast if it targets a spell or ability that targets a creature you control with power 7 or greater.

Counter target noncreature spell. Your opponents can't cast noncreature spells this turn.

Counter target spell unless its controller discards their hand. Transmute {1}{U}{B} ({1}{U}{B}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

Counter target spell unless its controller pays {X}. If that player doesn't, they tap all lands with mana abilities they control and lose all unspent mana.

Choose one — • Counter target spell if it's blue. • Destroy target permanent if it's blue.

Counter target spell unless its controller pays {2}.

Counter target spell unless its controller pays {1} for each card in your graveyard.

Counter target spell that targets a permanent you control.

Choose one — • Counter target blue spell. • Destroy target blue permanent.

Counter target spell. You may cast a spell with equal or lesser mana value from your hand without paying its mana cost.

Counter target nonartifact spell unless its controller pays {2}.

Counter target spell. Untap up to four lands.

If an opponent cast a blue spell this turn, you may pay {R} rather than pay this spell's mana cost. Change the target of target spell with a single target.

Counter target spell. Amass Orcs 1. (Put a +1/+1 counter on an Army you control. It's also an Orc. If you don't control an Army, create a 0/0 black Orc Army creature token first.)

As an additional cost to cast this spell, you may reveal a Dragon card from your hand. Counter target spell unless its controller pays {1}. If you revealed a Dragon card or controlled a Dragon as you cast this spell, counter that spell instead.