Riders of Gavony 
Creature — Human Knight
$0.27 #12608 0.26 14.3 years
Vigilance
As this creature enters, choose a creature type.
Human creatures you control have protection from creatures of the chosen type.
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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.
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"As this enchantment enters, choose a creature type."
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"As this creature enters, choose a creature type."
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"As this enchantment enters, choose a creature type."
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"As this enchantment enters, choose a creature type."
Steely Resolve78%
$1.84↑#7601↑0.50↑23.9 years↑
"As this enchantment enters, choose a creature type."
+1 more matching line
Spare from Evil77%
$0.20↓#20233↓0.06↓14.9 years
"Creatures you control gain protection from non-Human creatures until end of turn."
Stalwart Pathlighter75%
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"Vigilance"
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"Vigilance"
Caller of the Hunt74%
$1.14↑#21433↓0.44↑26.9 years↑
"As an additional cost to cast this spell, choose a creature type."
Serra's Emissary73%
$7.36↑#2698↑1.02↑5.3 years↓
"You and creatures you control have protection from the chosen card type."
+1 more matching line
Guardian of Faith73%
$0.60↑#1937↑0.335.1 years↓
"Vigilance"
Kindred Boon72%
$0.31↑#7284↑0.44↑9.0 years↓
"As this enchantment enters, choose a creature type."
+1 more matching line
Coppercoat Vanguard72%
$0.28↑#4090↑0.323.3 years↓
"Each other Human you control gets +1/+0 and has ward 
."
."
Extinction72%
$0.89↑#20990↓0.2528.9 years↑
"Destroy all creatures of the creature type of your choice."
Earnest Fellowship70%
$1.53↑#19811↓0.62↑24.9 years↑
"Each creature has protection from its colors."
Herald of Dromoka70%
$0.15↓#129090.2611.4 years↓
"Vigilance"
Absolute Law70%
$1.02↑#19610↓0.60↑27.9 years↑
"All creatures have protection from red."
Cover of Darkness70%
$8.35↑#1471↑0.56↑23.9 years↑
"As this enchantment enters, choose a creature type."
+1 more matching line
Samite Elder70%
$0.59↑#23679↓0.2025.6 years↑
"
: Creatures you control gain protection from the colors of target permanent you control until end of turn."
: Creatures you control gain protection from the colors of target permanent you control until end of turn."