Zhou Yu, Chief Commander {5}{U}{U}
Legendary Creature — Human Soldier
Zhou Yu can't attack unless defending player controls an Island.
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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.
Shauku, Endbringer 84%
$2.34#20586
"this card can't attack if there's another creature on the battlefield."
Alexios, Deimos of Kosmos 83%
$0.54#1245
"this card attacks each combat if able, can't be sacrificed, and can't attack its owner."
Pipsqueak, Rebel Strongarm 82%
$0.20#26567
"this card can't attack alone unless he has a +1/+1 counter on him."
Xantcha, Sleeper Agent 81%
$1.41#3008
"this card attacks each combat if able and can't attack its owner or planeswalkers its owner controls."
Floodchaser 81%
$0.05#28761
"This creature can't attack unless defending player controls an Island."
Armored Galleon 81%
$1.01#29872
"This creature can't attack unless defending player controls an Island."
Vodalian Knights 81%
#29223
"This creature can't attack unless defending player controls an Island."
Hammerhead Shark 81%
#24873
"This creature can't attack unless defending player controls an Island."
Red Cliffs Armada 81%
#30758
"This creature can't attack unless defending player controls an Island."
Deep-Sea Serpent 81%
$0.33#30165
"This creature can't attack unless defending player controls an Island."
Merchant Ship 81%
$46.42#28352
"This creature can't attack unless defending player controls an Island."
Kukemssa Serpent 81%
$0.16#28250
"This creature can't attack unless defending player controls an Island."