Polymorphist's Jest 
Instant
$8.06 #4643 0.58 12.3 years
Until end of turn, each creature target player controls loses all abilities and becomes a blue Frog with base power and toughness 1/1.
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Cards similar to Polymorphist's Jest expected a card that isn't here?
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Turn to Frog94%
$0.18↓#9066↓0.29↓15.3 years↑
"Until end of turn, target creature loses all abilities and becomes a blue Frog with base power and toughness 1/1."
Gift of Tusks91%
$0.09↓#23827↓0.06↓10.7 years↓
"Until end of turn, target creature loses all abilities and becomes a green Elephant with base power and toughness 3/3."
Mercurial Transformation88%
$0.27↓#17570↓0.06↓5.5 years↓
"Until end of turn, target nonland permanent loses all abilities and becomes your choice of a blue Frog creature with base power and toughness 1/1 or a blue Octopus creature with base power and toughness 4/4."
Snakeform88%
$0.16↓#20245↓0.38↓18.2 years↑
"Until end of turn, target creature loses all abilities and becomes a green Snake with base power and toughness 1/1."
Frogify86%
$0.22↓#47320.607.0 years↓
"Enchanted creature loses all abilities and is a blue Frog creature with base power and toughness 1/1."
Turn // Burn84%
$0.10↓#19474↓0.06↓13.5 years↑
"Until end of turn, target creature loses all abilities and becomes a red Weird with base power and toughness 0/1."
Ovinize84%
$0.07↓#17539↓0.39↓19.7 years↑
"Until end of turn, target creature loses all abilities and has base power and toughness 0/1."
Ichthyomorphosis84%
$0.15↓#14430↓0.37↓6.7 years↓
"Enchanted creature loses all abilities and is a blue Fish with base power and toughness 0/1."
Phantasmal Form83%
$0.06↓#24986↓0.36↓7.4 years↓
"Until end of turn, up to two target creatures each have base power and toughness 3/3, gain flying, and become blue Illusions in addition to their other colors and types."
Eaten by Piranhas82%
$0.28↓#39520.34↓2.9 years↓
"Enchanted creature loses all abilities and is a black Skeleton creature with base power and toughness 1/1."
Noggle the Mind81%
$0.18↓#10850↓0.46↓0.7 years↓
"Enchanted creature loses all abilities and is a colorless Noggle with base power and toughness 1/1."
Sea Kings' Blessing80%
$5.68↓#25549↓0.14↓32.4 years↑
"One or more target creatures become blue until end of turn."
Amphibian Downpour80%
$1.90↓#1233↑0.89↑2.3 years↓
"Enchanted creature loses all abilities and is a blue Frog creature with base power and toughness 1/1."
Serpentine Ambush80%
$0.12↓#18736↓0.00↓4.9 years↓
"Until end of turn, target creature becomes a blue Serpent with base power and toughness 5/5."
Curious Colossus78%
$0.75↓#8103↓0.70↑0.7 years↓
"When this creature enters, each creature target opponent controls loses all abilities, becomes a Coward in addition to its other types, and has base power and toughness 1/1."
Startling Development76%
$0.10↓#21716↓0.00↓6.5 years↓
"Until end of turn, target creature becomes a blue Serpent with base power and toughness 4/4."
Dance of the Skywise76%
$0.15↓#28464↓0.14↓11.6 years
"Until end of turn, target creature you control becomes a blue Dragon Illusion with base power and toughness 4/4, loses all abilities, and gains flying."
Diminish76%
$0.04↓#20043↓0.17↓16.3 years↑
"Target creature has base power and toughness 1/1 until end of turn."
Sudden Spoiling76%
$5.19↓#2100↑0.72↑20.0 years↑
"Until end of turn, creatures target player controls lose all abilities and have base power and toughness 0/2."
Fractalize76%
$0.21↓#18626↓0.02↓0.5 years↓
"Until end of turn, target creature becomes a green and blue Fractal with base power and toughness each equal to X plus 1."