Lovestruck Beast // Heart's Desire {2}{G} // {G}
Creature — Beast Noble // Sorcery — Adventure
This creature can't attack unless you control a 1/1 creature.
Create a 1/1 white Human creature token. (Then exile this card. You may cast the creature later from exile.)
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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.
Mogg Toady 94%
$0.11#30572
"This creature can't attack unless you control more creatures than defending player."
Goblin Goon 94%
$0.35#20282
"This creature can't attack unless you control more creatures than defending player."
Warden of the Chained 92%
$0.10#27889
"This creature can't attack unless you control another creature with power 4 or greater."
Lambholt Pacifist // Lambholt Butcher 92%
$0.21#23485
"This creature can't attack unless you control a creature with power 4 or greater."
Bloodcrazed Goblin 90%
$0.18#25197
"This creature can't attack unless an opponent has been dealt damage this turn."
Goblin Cohort 90%
$0.24#24308
"This creature can't attack unless you've cast a creature spell this turn."
Mogg Conscripts 90%
#27105
"This creature can't attack unless you've cast a creature spell this turn."
Lurking Green Dragon 90%
$0.21#22222
"This creature can't attack unless defending player controls a creature with flying."
Orcish Conscripts 89%
#30294
"This creature can't attack unless at least two other creatures attack."
Silburlind Snapper 88%
$0.04#26997
"This creature can't attack unless you've cast a noncreature spell this turn."
Harbor Serpent 88%
$0.14#20206
"This creature can't attack unless there are five or more Islands on the battlefield."