Chameleon, Master of Disguise 

Legendary Creature — Human Shapeshifter Villain
$0.38 #1879 0.35 1.0 years
You may have Chameleon enter as a copy of a creature you control, except his name is Chameleon, Master of Disguise.
Mayhem 
(You may cast this card from your graveyard for 
if you discarded it this turn. Timing rules still apply.)
Click a line or tag to filter
Cards similar to Chameleon, Master of Disguise 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.
Mirror Image90%
$0.30↓#5382↓0.19↓8.1 years↑
"You may have this creature enter as a copy of a creature you control."
Stunt Double88%
$4.07↑#3805↓0.22↓10.0 years↑
"You may have this creature enter as a copy of any creature on the battlefield."
Clone88%
$0.31↓#3742↓0.3133.1 years↑
"You may have this creature enter as a copy of any creature on the battlefield."
Sakashima the Impostor86%
$13.82↑#20200.54↑21.3 years↑
"You may have this card enter as a copy of any creature on the battlefield, except its name is this card, it's legendary in addition to its other types, and it has "

: Return this card to its owner's hand at the beginning of the next end step.""
Glasspool Mimic // Glasspool Shore86%
$5.87↑#1166↑0.21↓5.9 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."
Mirrorhall Mimic // Ghastly Mimicry86%
$2.02↑#4095↓0.17↓4.8 years↑
"You may have this creature enter as a copy of any creature on the battlefield, except it's a Spirit in addition to its other types."
Visage Bandit84%
$0.15↓#7365↓0.412.4 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."
Quicksilver Gargantuan83%
$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."
Mocking Doppelganger81%
$3.39↑#5455↓0.21↓4.2 years↑
"You may have this creature enter as a copy of a creature an opponent controls, except it has "Other creatures with the same name as this creature are goaded.""
Sakashima of a Thousand Faces81%
$18.18↑#1069↑0.90↑5.8 years↑
"You may have Sakashima enter as a copy of another creature you control, except it has Sakashima's other abilities."