Counterbalance SLD

Card

id	89291
artist	Rope Arrow
artistIds	e0077f10-5c68-4fcd-88a6-844108d3b9a2
asciiName
attractionLights
availability	paper
boosterTypes
borderColor	borderless
colorIdentity	U
colorIndicator
colors	U
defense
duelDeck
edhrecRank	2734
edhrecSaltiness	1.31
faceConvertedManaCost
faceFlavorName
faceManaValue
faceName
finishes	nonfoil, foil
flavorName
flavorText
frameEffects
frameVersion	2015
hand
hasAlternativeDeckLimit
hasContentWarning
hasFoil	1
hasNonFoil	1
isAlternative
isFullArt	1
isFunny
isGameChanger
isOnlineOnly
isOversized
isPromo
isRebalanced
isReprint	1
isReserved
isStarter
isStorySpotlight
isTextless
isTimeshifted
keywords
language	English
layout	normal
leadershipSkills
life
loyalty
manaCost	{U}{U}
manaValue	2
name	Counterbalance
number	1220
originalPrintings
originalReleaseDate	2023-04-14
originalText
otherFaceIds
power
printings	CSP, MB2, MP2, PLST, SLD
promoTypes	poster
rarity	rare
rebalancedPrintings
relatedCards
securityStamp	oval
setCode	SLD
side
signature
sourceProducts	{'foil': ['a7fce281-d4cf-5aba-8fc1-219e7a2a9155'], 'nonfoil': ['93aaeb91-f308-5d1e-97dd-3515747c1789']}
subsets	Secret Lair Bonus cards
subtypes
supertypes
text	Whenever an opponent casts a spell, you may reveal the top card of your library. If you do, counter that spell if it has the same mana value as the revealed card.
toughness
type	Enchantment
types	Enchantment
uuid	5fdd638f-4521-5698-bb0e-b5e41db50975
variations
watermark
setName	Secret Lair Drop

id	89291
cardKingdom	https://mtgjson.com/links/b56b8ffceecdcab1
cardKingdomEtched
cardKingdomFoil	https://mtgjson.com/links/60cab5da45f04881
cardmarket
tcgplayer	https://mtgjson.com/links/22353e8d7d573bdc
tcgplayerEtched
uuid	5fdd638f-4521-5698-bb0e-b5e41db50975

No foreign data.

date	text
2006-07-15	If an opponent casts a spell with X in its mana cost, the mana value of that spell takes the value of X into account. If you reveal a card with X in its mana cost, X is 0. For example, if your opponent casts Blaze with X=1, Counterbalance will counter that spell if you reveal a card with mana value 2, but it won't counter that spell if you reveal a Blaze of your own.
2017-04-18	If an opponent casts half of a split card (for example, Hit), it won't be countered if you reveal that same split card. The mana value of a split card is determined by the combined mana cost of its two halves, but the mana value of Hit is determined using only that half's mana cost.