Bubble Smuggler 

Creature — Octopus Fish
$0.06 #21422 0.00 2.7 years
Disguise 
(You may cast this card face down for
as a 2/2 creature with ward
. Turn it face up any time for its disguise cost.)
As this creature is turned face up, put four +1/+1 counters on it.
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Cards similar to Bubble Smuggler 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.
Hooded Hydra94%
$0.62↑#3439↑0.17↑12.1 years↑
"As this creature is turned face up, put five +1/+1 counters on it."
Guardian Shield-Bearer90%
$0.10↑#27183↓0.0011.6 years↑
"When this creature is turned face up, put a +1/+1 counter on another target creature you control."
Dog Walker88%
$0.12↑#233060.24↑2.7 years
"Disguise 
You may cast this card face down for
as a 2/2 creature with ward
. Turn it face up any time for its disguise cost."
Concealed Weapon86%
$0.15↑#219390.27↑2.7 years
"Disguise 
You may cast this card face down for
as a 2/2 creature with ward
. Turn it face up any time for its disguise cost."
Forum Familiar85%
$0.09↑#213870.21↑2.7 years
"Disguise 
You may cast this card face down for
as a 2/2 creature with ward
. Turn it face up any time for its disguise cost."
Crowd-Control Warden84%
$0.07↑#223370.002.7 years
"As this creature enters or is turned face up, put X +1/+1 counters on it, where X is the number of other creatures you control."
+1 more matching line
Mistway Spy84%
$0.11↑#190030.062.7 years
"Disguise 
You may cast this card face down for
as a 2/2 creature with ward
. Turn it face up any time for its disguise cost."
Offender at Large83%
$0.15↑#27406↓0.062.7 years
"Disguise 
You may cast this card face down for
as a 2/2 creature with ward
. Turn it face up any time for its disguise cost."
Branch of Vitu-Ghazi82%
$0.27↑#7681↑0.062.7 years
"Disguise
You may cast this card face down for
as a 2/2 creature with ward
. Turn it face up any time for its disguise cost."
Pyrotechnic Performer82%
$0.23↑#12180↑0.062.7 years
"Disguise
You may cast this card face down for
as a 2/2 creature with ward
. Turn it face up any time for its disguise cost."
Warbreak Trumpeter82%
$0.25↑#224990.0023.7 years↑
"When this creature is turned face up, create X 1/1 red Goblin creature tokens."
+1 more matching line
Exit Specialist82%
$0.23↑#14561↑0.25↑2.7 years
"Disguise 
You may cast this card face down for
as a 2/2 creature with ward
. Turn it face up any time for its disguise cost."
Gadget Technician80%
$0.07↑#26149↓0.062.7 years
"Disguise 
You may cast this card face down for
as a 2/2 creature with ward
. Turn it face up any time for its disguise cost."
Culvert Ambusher80%
$0.05↓#235350.21↑2.7 years
"Disguise 
You may cast this card face down for
as a 2/2 creature with ward
. Turn it face up any time for its disguise cost."
Alley Assailant80%
$0.08↑#253650.002.7 years
"Disguise 

You may cast this card face down for
as a 2/2 creature with ward
. Turn it face up any time for its disguise cost."
Faerie Snoop80%
$0.14↑#236390.062.7 years
"Disguise 

You may cast this card face down for
as a 2/2 creature with ward
. Turn it face up any time for its disguise cost."
True Identity80%
$0.19↑#176250.062.7 years
"Disguise
You may cast this card face down for
as a 2/2 creature with ward
. Turn it face up any time for its disguise cost."
Aquamorph Entity80%
$0.17↑#28062↓0.0019.7 years↑
"Morph 
You may cast this card face down as a 2/2 creature for
. Turn it face up any time for its morph cost."
Greenbelt Radical80%
$0.13↑#15221↑0.002.7 years
"Disguise 

You may cast this card face down for
as a 2/2 creature with ward
. Turn it face up any time for its disguise cost."