Hullbreaker Horror 
Creature — Kraken Horror
$5.95 #278 2.00 4.9 years
Flash
This spell can't be countered.
Whenever you cast a spell, choose up to one —
• Return target spell you don't control to its owner's hand.
• Return target nonland permanent to its owner's hand.
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Cards similar to Hullbreaker Horror 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.
Unsubstantiate90%
$0.19↓#5127↓0.44↓10.2 years↑
"Return target spell or creature to its owner's hand."
Sink into Stupor // Soporific Springs90%
$9.29↑#166↑0.32↓2.3 years↓
"Return target spell or nonland permanent an opponent controls to its owner's hand."
Eject89%
$0.19↓#11185↓0.82↓1.4 years↓
"Return target nonland permanent to its owner's hand."
+1 more matching line
Reprieve88%
$1.53↓#594↓0.48↓3.3 years↓
"Return target spell to its owner's hand."
Fatehold Charm87%
$0.19↓#11244↓0.11↓0.0 years↓
"• Return target spell or creature to its owner's hand."
Brutal Expulsion86%
$0.20↓#20596↓0.11↓11.0 years↑
"• Return target spell or creature to its owner's hand."
Run Ashore86%
$0.11↓#25757↓0.10↓5.7 years
"• Return target nonland permanent to its owner's hand."
+1 more matching line
Spellscorn Coven // Take It Back84%
$0.21↓#11589↓0.43↓3.1 years↓
"Return target spell to its owner's hand."
Inevitable Defeat84%
$0.38↓#6536↓0.00↓1.5 years↓
"This spell can't be countered."
You Come to a River84%
$0.29↓#8131↓0.00↓5.2 years
"• Fight the Current — Return target nonland permanent to its owner's hand."
Divide by Zero84%
$0.10↓#17156↓0.59↓5.5 years
"Return target spell or permanent with mana value 1 or greater to its owner's hand."
Sublime Epiphany82%
$0.26↓#1687↓0.38↓6.3 years↑
"• Return target nonland permanent to its owner's hand."
Void Squall82%
$0.05↓#28267↓0.06↓11.6 years↑
"Return target nonland permanent to its owner's hand."
Machine Over Matter82%
$0.15↓#15128↓0.06↓3.9 years
"Return target nonland permanent to its owner's hand."
Wail of the Forgotten82%
$0.24↓#14155↓0.11↓2.9 years↓
"• Return target nonland permanent to its owner's hand."
Depart the Realm82%
$0.26↓#10107↓0.18↓5.7 years
"Return target nonland permanent to its owner's hand."
Prismari Charm81%
$0.29↓#5171↓0.08↓0.5 years↓
"• Return target nonland permanent to its owner's hand."
Venser, Shaper Savant81%
$0.45↓#1986↓0.29↓19.5 years↑
"When this card enters, return target spell or permanent to its owner's hand."
+1 more matching line
Terra Stomper81%
$0.17↓#15687↓0.06↓17.0 years↑
"This spell can't be countered."
Vexing Beetle81%
$0.26↓#31784↓0.00↓23.7 years↑
"This spell can't be countered."