Denied!

Instant, U (1)
Play Denied only as any opponent casts target spell. Name a card, then look at all cards in that player's hand. If the named card is in the player's hand, counter target spell.¹
"Don't worry about it. It happens to every mage sooner or later."
Illus. Quinton Hoover

Format Legality	Banned in Vintage, Legacy, Extended, Standard, MTGO Classic
Printings (1/1)	Unglued (Common)