Ethereal Investigator 

Creature — Spirit
Flying
When this creature enters, investigate X times, where X is the number of opponents you have. (To investigate, create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")
Whenever you draw your second card each turn, create a 1/1 white Spirit creature token with flying.
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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.
Clarion Spirit 92%
$0.17#7013
"Whenever you cast your second spell each turn, create a 1/1 white Spirit creature token with flying."
Thalia's Geistcaller 91%
$0.24#21246
"Whenever you cast a spell from your graveyard, create a 1/1 white Spirit creature token with flying."
King of the Oathbreakers 90%
$0.37#11846
"Whenever this card or another Spirit you control phases in, create a tapped 1/1 white Spirit creature token with flying."
Whispering Wizard 89%
$0.20#17792
"Whenever you cast a noncreature spell, create a 1/1 white Spirit creature token with flying. This ability triggers only once each turn."
Kykar, Wind's Fury 88%
$0.37#3145
"Whenever you cast a noncreature spell, create a 1/1 white Spirit creature token with flying."
Oyobi, Who Split the Heavens 88%
$0.29#12293
"Whenever you cast a Spirit or Arcane spell, create a 3/3 white Spirit creature token with flying."
Wrangler of the Damned 87%
$0.12#23028
"At the beginning of your end step, if you haven't cast a spell from your hand this turn, create a 2/2 white Spirit creature token with flying."
Ranar the Ever-Watchful 86%
$0.41#11630
"Whenever one or more cards are put into exile from your hand or a spell or ability you control exiles one or more permanents from the battlefield, create a 1/1 white Spirit creature token with flying."
Field of Souls 84%
$0.35#9741
"Whenever a nontoken creature is put into your graveyard from the battlefield, create a 1/1 white Spirit creature token with flying."
Teysa, Opulent Oligarch 84%
$0.34#6338
"Whenever a Clue you control is put into a graveyard from the battlefield, create a 1/1 white and black Spirit creature token with flying. This ability triggers only once each turn."
Invasion of Tolvada // The Broken Sky 82%
$0.35#9505
"At the beginning of your end step, create a 1/1 white and black Spirit creature token with flying."
Spirit Cairn 81%
$0.16#20590
"Whenever a player discards a card, you may pay {W}. If you do, create a 1/1 white Spirit creature token with flying."
Luminous Angel 81%
$0.93#22308
"At the beginning of your upkeep, you may create a 1/1 white Spirit creature token with flying."
Valor of the Worthy 81%
$0.15#19895
"When enchanted creature leaves the battlefield, create a 1/1 white Spirit creature token with flying."
Court of Grace 80%
$2.91#1643
"At the beginning of your upkeep, create a 1/1 white Spirit creature token with flying. If you're the monarch, create a 4/4 white Angel creature token with flying instead."