Knowledge Seeker {1}{U}
Creature — Fox Spirit
Vigilance
Whenever you draw your second card each turn, put a +1/+1 counter on this creature.
When this creature dies, create a Clue token. (It's an artifact with "{2}, Sacrifice this token: Draw a card.")
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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.
Museum Nightwatch 84%
$0.05#27591
"When this creature dies, create a 2/2 white and blue Detective creature token."
Penumbra Wurm 81%
$0.34#13828
"When this creature dies, create a 6/6 black Wurm creature token with trample."
Atlantean Cavalry 100%
$0.16#24366
"Whenever you draw your second card each turn, put a +1/+1 counter on this creature."
+1 more matching line
Stalwarts of Osgiliath 100%
$0.12#17351
"Whenever you draw your second card each turn, put a +1/+1 counter on this creature."
Faerie Vandal 100%
$0.21#5927
"Whenever you draw your second card each turn, put a +1/+1 counter on this creature."
Knights of Dol Amroth 100%
$0.13#13119
"Whenever you draw your second card each turn, put a +1/+1 counter on this creature."
Gurgling Anointer 100%
$0.13#13885
"Whenever you draw your second card each turn, put a +1/+1 counter on this creature."
Lat-Nam Adept 100%
$0.05#20672
"Whenever you draw your second card each turn, put a +1/+1 counter on this creature."
Erudite Wizard 100%
$0.13#14953
"Whenever you draw your second card each turn, put a +1/+1 counter on this creature."
Kid Loki 91%
$0.24#15202
"Whenever you draw your second card each turn, put a +1/+1 counter on this card."
Blue Marvel, Adam Brashear 91%
$0.32#27961
"Whenever you draw your second card each turn, put a +1/+1 counter on this card."
Otter-Penguin 86%
$0.13#17687
"Whenever you draw your second card each turn, this creature gets +1/+2 until end of turn and can't be blocked this turn."