Copycrook 
Creature — Shapeshifter Rogue
$0.27 #6076 0.27 2.2 years
You may have this creature enter as a copy of any creature on the battlefield, except it has "Whenever this creature attacks, it connives." (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on this creature.)
Click a line or tag to filter
Cards similar to Copycrook 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.
Atlantean Skirmisher90%
$0.28↑#24942↓0.00↓0.2 years↓
"Whenever this creature attacks, it connives."
Doc Ock's Henchmen90%
$0.17↓#13562↓0.251.0 years↓
"Whenever this creature attacks, it connives."
Scurrilous Sentry87%
$0.13↓#16093↓0.00↓2.2 years
"Whenever this creature enters or attacks, it connives."
Tiger Shark, Abyssal Hunter84%
$0.23↓#24569↓0.00↓0.2 years↓
"Whenever this card enters or attacks, he connives."
Kang, Temporal Tyrant82%
$0.15↓#10566↓0.00↓0.2 years↓
"Whenever this card attacks, he connives."
Ultron, Unlimited82%
$0.64↑#9700↓0.00↓0.2 years↓
"Whenever this card attacks, he connives."
Stunt Double80%
$4.07↑#3805↑0.2210.0 years↑
"You may have this creature enter as a copy of any creature on the battlefield."
Clone80%
$0.31↑#3742↑0.3133.1 years↑
"You may have this creature enter as a copy of any creature on the battlefield."
Mirror Image79%
$0.30↑#53820.198.1 years↑
"You may have this creature enter as a copy of a creature you control."
Illuminator Virtuoso79%
$0.23↓#16421↓0.274.4 years↑
"Whenever this creature becomes the target of a spell you control, it connives."
Hypnotic Grifter77%
$0.18↓#22302↓0.00↓4.4 years↑
"
: This creature connives."
: This creature connives."
Altered Ego76%
$0.20↓#4080↑0.13↓10.4 years↑
"You may have this creature enter as a copy of any creature on the battlefield, except it enters with X additional +1/+1 counters on it."
Dack's Duplicate76%
$0.27#11159↓0.07↓12.2 years↑
"You may have this creature enter as a copy of any creature on the battlefield, except it has haste and dethrone."
Protean Raider76%
$0.68↑#13446↓0.67↑8.6 years↑
"If you attacked this turn, you may have this creature enter as a copy of any creature on the battlefield."
Glasspool Mimic // Glasspool Shore74%
$5.87↑#1166↑0.215.9 years↑
"You may have this creature enter as a copy of a creature you control, except it's a Shapeshifter Rogue in addition to its other types."
Prowler, Clawed Thief74%
$0.17↓#7971↓0.271.0 years↓
"Whenever another Villain you control enters, this card connives."
Raffine's Informant74%
$0.22↓#20795↓0.00↓4.4 years↑
"When this creature enters, it connives."
Psionic Snoop74%
$0.14↓#25755↓0.53↑4.4 years↑
"When this creature enters, it connives."
Red Room Recruit74%
$0.21↓#20241↓0.00↓0.2 years↓
"When this creature enters, it connives."
Quicksilver Gargantuan73%
$0.54↑#18240↓0.14↓15.9 years↑
"You may have this creature enter as a copy of any creature on the battlefield, except it's 7/7."