Arcades, the Strategist {1}{G}{W}{U}
Legendary Creature — Elder Dragon
Flying, vigilance
Whenever a creature you control with defender enters, draw a card.
Each creature you control with defender assigns combat damage equal to its toughness rather than its power and can attack as though it didn't have defender.
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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.
Soul of the Harvest 82%
$1.20#1617
"Whenever another nontoken creature you control enters, you may draw a card."
Gladewalker Ritualist 82%
$0.27#20938
"Whenever another creature you control named this card enters, draw a card."
Nils, Discipline Enforcer 81%
$0.25#4012
"Each creature with one or more counters on it can't attack you or planeswalkers you control unless its controller pays {X}, where X is the number of counters on that creature."
Mogg Toady 81%
$0.11#30572
"This creature can't attack unless you control more creatures than defending player."
Goblin Goon 81%
$0.35#20282
"This creature can't attack unless you control more creatures than defending player."
The Blue Spirit 80%
$0.92#7773
"Whenever a nontoken creature you control enters during combat, draw a card."