Presence of the Master 

Enchantment
Whenever a player casts an enchantment spell, counter it.
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Cards that do something similar 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.
Dovescape 83%
$4.38#11894
"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."
Vexing Bauble 83%
$2.26#1316
"Whenever a player casts a spell, if no mana was spent to cast it, counter that spell."
Ice Cave 82%
$0.80#20895
"Whenever a player casts a spell, any other player may pay that spell's mana cost. If a player does, counter the spell."
Cephalid Shrine 82%
$0.29#29975
"Whenever a player casts a spell, counter that spell unless that player pays {X}, where X is the number of cards in all graveyards with the same name as the spell."
Void Mirror 81%
$0.32#15339
"Whenever a player casts a spell, if no colored mana was spent to cast it, counter that spell."