Crippling Fear 


Sorcery
Choose a creature type. Creatures that aren't of the chosen type get -3/-3 until end of turn.
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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.
Outbreak 99%
$0.18#29159
"Choose a creature type. All creatures of that type get -1/-1 until end of turn."
Pack's Disdain 98%
$0.11#19617
"Choose a creature type. Target creature gets -1/-1 until end of turn for each permanent of the chosen type you control."
Harmonized Crescendo 87%
$1.03#3553
"Choose a creature type. Draw a card for each permanent you control of that type."
Distant Melody 87%
$0.40#636
"Choose a creature type. Draw a card for each permanent you control of that type."
Roar of the Crowd 87%
$0.17#19641
"Choose a creature type. this card deals damage to any target equal to the number of permanents you control of the chosen type."
Kindred Charge 87%
$9.20#5781
"Choose a creature type. For each creature you control of the chosen type, create a token that's a copy of that creature. Those tokens gain haste. Exile them at the beginning of the next end step."
Peer Pressure 87%
$1.61#12010
"Choose a creature type. If you control more creatures of that type than each other player, you gain control of all creatures of that type."
Kindred Dominance 85%
$3.18#716
"Choose a creature type. Destroy all creatures that aren't of the chosen type."
For the Ancestors 85%
$3.50#7782
"Choose a creature type. Look at the top six cards of your library. You may reveal any number of cards of the chosen type from among them and put the revealed cards into your hand. Put the rest on the bottom of your library in a random order."
Kindred Summons 83%
$0.52#2399
"Choose a creature type. Reveal cards from the top of your library until you reveal X creature cards of the chosen type, where X is the number of creatures you control of that type. Put those cards onto the battlefield, then shuffle the rest of the revealed cards into your library."