Stall for Time 

Instant
$0.15 #20131 0.07 4.0 years
Kicker 
(You may pay an additional 
as you cast this spell.)
Tap up to two target creatures. If this spell was kicked, put a stun counter on each of those creatures. (If a permanent with a stun counter would become untapped, remove one from it instead.)
Draw a card.
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Cards similar to Stall for Time 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.
Succumb to the Cold92%
$0.25↑#10555↑0.143.0 years
"Tap one or two target creatures an opponent controls. Put a stun counter on each of them."
Rapier Wit90%
$0.20↑#16069↑0.000.4 years↓
"Tap target creature. If it's your turn, put a stun counter on it."
+1 more matching line
Donatello, Rad Scientist90%
$0.38↑#189600.000.5 years↓
"When this card enters, tap up to three target creatures your opponents control. Put a stun counter on each of them."
Procrastinate89%
$0.20↑#13400↑0.000.4 years↓
"Tap target creature. Put twice X stun counters on it."
Tranquilize89%
$0.17↑#13061↑0.57↑2.2 years↓
"Tap target creature an opponent controls and put three stun counters on it."
Decision Paralysis88%
$0.05↓#27142↓0.53↑9.4 years↑
"Tap up to two target creatures. Those creatures don't untap during their controller's next untap step."
Frost Breath88%
$0.11↓#177370.53↑15.1 years↑
"Tap up to two target creatures. Those creatures don't untap during their controller's next untap step."
Rime Chill88%
$0.12↓#220290.000.6 years↓
"Tap up to two target creatures. Put a stun counter on each of them."
+1 more matching line
Stunning Shot88%
$0.29↑#28128↓0.000.2 years↓
"Put two +1/+1 counters on up to one target creature you control. Tap up to one target creature an opponent controls and put a stun counter on it."
Repel the Darkness87%
$0.05↓#204440.30↑16.4 years↑
"Tap up to two target creatures."
+1 more matching line
Crippling Chill86%
$0.03↓#197450.1214.3 years↑
"Tap target creature. It doesn't untap during its controller's next untap step."
+1 more matching line
Frostveil Ambush86%
$0.13↓#206760.126.4 years↑
"Tap up to two target creatures. Those creatures don't untap during their controller's next untap step."
Utrom Scientists85%
$0.13↓#221620.000.5 years↓
"When this creature enters, tap up to one target creature and put a stun counter on it."
Press for Answers85%
$0.05↓#202170.1110.4 years↑
"Tap target creature. It doesn't untap during its controller's next untap step."
+1 more matching line
Homesickness84%
$0.17↑#211700.000.4 years↓
"Target player draws two cards. Tap up to two target creatures. Put a stun counter on each of them."
Shipwreck Patrol84%
$0.17↑#30233↓0.000.2 years↓
"When this creature enters, tap target creature an opponent controls and put a stun counter on it."