Hipparion 

Creature — Horse
This creature can't block creatures with power 3 or greater unless you pay {1}.
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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.
Spitfire Handler 87%
$0.18#30256
"This creature can't block creatures with power greater than this creature's power."
Aetherflame Wall 85%
$0.06#23254
"This creature can block creatures with shadow as though they didn't have shadow."
Wall of Diffusion 84%
#28021
"This creature can block creatures with shadow as though it had shadow."
Mogg Toady 84%
$0.11#30572
"This creature can't block unless you control more creatures than attacking player."
Goblin Goon 84%
$0.35#20282
"This creature can't block unless you control more creatures than attacking player."