Silent Arbiter {4}
Artifact Creature — Construct
No more than one creature can attack each combat.
No more than one creature can block each combat.
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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.
Dueling Grounds 100%
$7.80#12017
"No more than one creature can block each combat."
+1 more matching line
Caverns of Despair 94%
$108.01#20749
"No more than two creatures can attack each combat."
+1 more matching line
Tangleclaw Werewolf // Fibrous Entangler 87%
$0.13#24058
"This creature can block an additional creature each combat."
Entourage of Trest 87%
$0.29#16626
"This creature can block an additional creature each combat as long as you're the monarch."
High Ground 86%
$0.29#14715
"Each creature you control can block an additional creature each combat."