In a four-player game a counterspell has to be worth the card and the tempo, so the ones that rank highest either cost very little, replace themselves, or answer anything.
94%Counterspell InstantCounter target spell.$3.51
90%An Offer You Can't Refuse InstantCounter target noncreature spell. Its controller creates two Treasure tokens. (They're artifacts with "{T}, Sacrifice this token: $3.09
91%Arcane Denial InstantCounter target spell. Its controller may draw up to two cards at the beginning of the next turn's upkeep. You draw a card at the b$1.58
94%Negate InstantCounter target noncreature spell.$0.19
93%Swan Song InstantCounter target enchantment, instant, or sorcery spell. Its controller creates a 2/2 blue Bird creature token with flying.$9.65
94%Fierce Guardianship InstantIf you control a commander, you may cast this spell without paying its mana cost. Counter target noncreature spell.$64.73
96%Mana Drain InstantCounter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's mana value.$57.79
96%Force of Will InstantYou may pay 1 life and exile a blue card from your hand rather than pay this spell's mana cost. Counter target spell.$59.82
93%Dovin's Veto InstantThis spell can't be countered. Counter target noncreature spell.$4.11
96%Force of Negation InstantIf 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$53.31
95%Flusterstorm InstantCounter target instant or sorcery spell unless its controller pays {1}. Storm (When you cast this spell, copy it for each spell ca$8.59
95%Pact of Negation InstantCounter target spell. At the beginning of your next upkeep, pay {3}{U}{U}. If you don't, you lose the game.$17.81
94%Mental Misstep Instant({U/P} can be paid with either {U} or 2 life.) Counter target spell with mana value 1.$8.45
95%Muddle the Mixture InstantCounter target instant or sorcery spell. Transmute {1}{U}{U} ({1}{U}{U}, Discard this card: Search your library for a card with th$2.49
94%Spell Pierce InstantCounter target noncreature spell unless its controller pays {2}.$0.29
94%Dispel InstantCounter target instant spell.$0.35
94%Rewind InstantCounter target spell. Untap up to four lands.$0.43
93%Strix Serenade InstantCounter target artifact, creature, or planeswalker spell. Its controller creates a 2/2 blue Bird creature token with flying.$3.12
92%Unwind InstantCounter target noncreature spell. Untap up to three lands.$1.38
90%Three Steps Ahead InstantSpree (Choose one or more additional costs.) + {1}{U} — Counter target spell. + {3} — Create a token that's a copy of target artif$5.76
82%Siren Stormtamer Creature — Siren Pirate WizardFlying {U}, Sacrifice this creature: Counter target spell or ability that targets you or a creature you control.$0.37
95%Flare of Denial InstantYou may sacrifice a nontoken blue creature rather than pay this spell's mana cost. Counter target spell.$3.55
90%Drown in the Loch InstantChoose one — • Counter target spell with mana value less than or equal to the number of cards in its controller's graveyard. • Des$1.90
88%Mystic Confluence InstantChoose three. You may choose the same mode more than once. • Counter target spell unless its controller pays {3}. • Return target $1.05
91%Long River's Pull InstantGift a card (You may promise an opponent a gift as you cast this spell. If you do, they draw a card before its other effects.) Cou$0.33
87%Izzet Charm InstantChoose one — • Counter target noncreature spell unless its controller pays {2}. • Izzet Charm deals 2 damage to target creature. •$0.18
95%Stubborn Denial InstantCounter target noncreature spell unless its controller pays {1}. Ferocious — If you control a creature with power 4 or greater, co$4.07
93%Cryptic Command InstantChoose two — • Counter target spell. • Return target permanent to its owner's hand. • Tap all creatures your opponents control. • $8.18
93%Sublime Epiphany InstantChoose one or more — • Counter target spell. • Counter target activated or triggered ability. • Return target nonland permanent to$0.32
92%Archmage's Charm InstantChoose one — • Counter target spell. • Target player draws two cards. • Gain control of target nonland permanent with mana value 1$1.92
Prices and legality come from Scryfall. Every card here was scored by the same search that runs when you type a question.
