Oyobi, Who Split the Heavens 
Legendary Creature — Spirit
$0.31 #12840 0.20 21.7 years
Flying
Whenever you cast a Spirit or Arcane spell, create a 3/3 white Spirit creature token with flying.
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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.
Kami of Tattered Shoji90%
$0.19↓#31246↓0.06↓21.7 years
"Whenever you cast a Spirit or Arcane spell, this creature gains flying until end of turn."
Guardian of Solitude89%
$0.18↓#27531↓0.06↓22.1 years
"Whenever you cast a Spirit or Arcane spell, target creature gains flying until end of turn."
Kami of the Hunt87%
$0.05↓#28351↓0.37↑22.1 years
"Whenever you cast a Spirit or Arcane spell, this creature gets +1/+1 until end of turn."
Scaled Hulk87%
$0.14↓#30750↓0.00↓21.7 years
"Whenever you cast a Spirit or Arcane spell, this creature gets +2/+2 until end of turn."
Jade Idol86%
$0.14↓#30748↓0.00↓22.1 years
"Whenever you cast a Spirit or Arcane spell, this artifact becomes a 4/4 Spirit artifact creature until end of turn."
Baku Altar86%
$2.15↑#21872↓0.00↓21.7 years
"Whenever you cast a Spirit or Arcane spell, you may put a ki counter on this artifact."
Fiddlehead Kami85%
$0.13↓#30454↓0.00↓21.4 years
"Whenever you cast a Spirit or Arcane spell, regenerate this creature."
Briarknit Kami85%
$0.11↓#23146↓0.05↓21.4 years
"Whenever you cast a Spirit or Arcane spell, put a +1/+1 counter on target creature."
Blademane Baku84%
$0.18↓#28169↓0.04↓21.7 years
"Whenever you cast a Spirit or Arcane spell, you may put a ki counter on this creature."
Bounteous Kirin84%
$0.39↑#19757↓0.05↓21.4 years
"Whenever you cast a Spirit or Arcane spell, you may gain life equal to that spell's mana value."
Budoka Pupil // Ichiga, Who Topples Oaks84%
$0.08↓#28784↓0.00↓21.7 years
"Whenever you cast a Spirit or Arcane spell, you may put a ki counter on this creature."
Innocence Kami84%
$0.18↓#29780↓0.07↓22.1 years
"Whenever you cast a Spirit or Arcane spell, untap this creature."
Sire of the Storm84%
$0.08↓#16792↓0.06↓22.1 years
"Whenever you cast a Spirit or Arcane spell, you may draw a card."
+1 more matching line
Kami of Fire's Roar84%
$0.09↓#27488↓0.1422.1 years
"Whenever you cast a Spirit or Arcane spell, target creature can't block this turn."
Orbweaver Kumo84%
$0.08↓#31128↓0.1222.1 years
"Whenever you cast a Spirit or Arcane spell, this creature gains forestwalk until end of turn."
Supreme Phantom84%
$0.33↑#9795↑0.06↓8.3 years↓
"Flying"
Petalmane Baku83%
$0.11↓#19965↓0.07↓21.7 years
"Whenever you cast a Spirit or Arcane spell, you may put a ki counter on this creature."
Kami of the Waning Moon82%
$0.12↓#22898↓0.06↓22.1 years
"Whenever you cast a Spirit or Arcane spell, target creature gains fear until end of turn."
Loam Dweller82%
$0.22↓#17977↓0.2721.7 years
"Whenever you cast a Spirit or Arcane spell, you may put a land card from your hand onto the battlefield tapped."
Yuki-Onna82%
$0.29↓#22458↓0.2121.4 years
"Whenever you cast a Spirit or Arcane spell, you may return this creature to its owner's hand."