Mind Spiral 

Sorcery
$0.11 #13862 0.10 2.2 years
Gift a tapped Fish (You may promise an opponent a gift as you cast this spell. If you do, they create a tapped 1/1 blue Fish creature token before its other effects.)
Target player draws three cards. If the gift was promised, tap target creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)
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Cards similar to Mind Spiral 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.
Homesickness92%
$0.14↑#20723↓0.170.5 years↓
"Target player draws two cards. Tap up to two target creatures. Put a stun counter on each of them."
Donatello's Science Lesson84%
$0.24↑#25883↓0.180.6 years↓
"Tap up to two target creatures. Up to two target players each draw a card."
Succumb to the Cold82%
$0.28↑#10746↑0.53↑3.1 years
"Tap one or two target creatures an opponent controls. Put a stun counter on each of them."
Out Cold81%
$0.14↑#138710.55↑2.7 years
"Tap up to two target creatures and put a stun counter on each of them. Investigate."
Dreamdew Entrancer81%
$0.33↑#7051↑0.062.2 years
"When this creature enters, tap up to one target creature and put three stun counters on it. If you control that creature, draw two cards."
Tranquilize80%
$0.14↑#132450.26↑2.3 years
"Tap target creature an opponent controls and put three stun counters on it."
Procrastinate78%
$0.18↑#126780.23↑0.5 years↓
"Tap target creature. Put twice X stun counters on it."
Frost Breath78%
$0.07↓#18110↓0.29↑15.3 years↑
"Tap up to two target creatures. Those creatures don't untap during their controller's next untap step."
Decision Paralysis78%
$0.05↓#27397↓0.20↑9.5 years↑
"Tap up to two target creatures. Those creatures don't untap during their controller's next untap step."
Kitnap78%
$0.25↑#10870↑0.36↑2.2 years
"When this Aura enters, tap enchanted creature. If the gift wasn't promised, put three stun counters on it."
+1 more matching line
Donatello, Rad Scientist78%
$0.35↑#18700↓0.45↑0.6 years↓
"When this card enters, tap up to three target creatures your opponents control. Put a stun counter on each of them."
Press for Answers78%
$0.06↓#20546↓0.1210.5 years↑
"Tap target creature. It doesn't untap during its controller's next untap step."
Rapier Wit76%
$0.16↑#152480.20↑0.5 years↓
"Tap target creature. If it's your turn, put a stun counter on it."