Vex 

Instant
$0.06 #24948 0.19 22.7 years
Counter target spell. That spell's controller may draw a card.
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Cards similar to Vex expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Ionize85%
$0.28↑#7688↑0.32↑8.0 years↓
"Counter target spell. this card deals 2 damage to that spell's controller."
Frilled Mystic82%
$0.22↑#7371↑0.207.7 years↓
"When this creature enters, you may counter target spell."
Failed Inspection82%
$0.06#221280.1710.1 years↓
"Counter target spell. Draw a card, then discard a card."
Psychic Strike76%
$0.33↑#9231↑0.2613.7 years↓
"Counter target spell. Its controller mills two cards."
Countermand76%
$0.07↑#14395↑0.2012.5 years↓
"Counter target spell. Its controller mills four cards."
Thought Collapse76%
$0.27↑#5861↑0.44↑7.7 years↓
"Counter target spell. Its controller mills three cards."