Thought Prison 
Artifact
$0.20 #23808 0.56 23.0 years
Imprint — When this artifact enters, you may have target player reveal their hand. If you do, choose a nonland card from it and exile that card.
Whenever a player casts a spell that shares a color or mana value with the exiled card, this artifact deals 2 damage to that player.
Click a line or tag to filter
Cards similar to Thought Prison 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.
Thought-Knot Seer86%
$5.16↑#9099↑0.45↓10.7 years↓
"When this creature enters, target opponent reveals their hand. You choose a nonland card from it and exile that card."
Night Terrors84%
$0.05↓#273230.28↓15.1 years↓
"Target player reveals their hand. You choose a nonland card from it. Exile that card."
Castigate84%
$0.19↓#247480.35↓20.8 years↓
"Target opponent reveals their hand. You choose a nonland card from it and exile that card."
Severance Priest82%
$0.11↓#244080.21↓1.5 years↓
"When this creature enters, target opponent reveals their hand. You may choose a nonland card from it. If you do, exile that card."
Nimble Larcenist82%
$0.06↓#232590.81↑4.5 years↓
"When this creature enters, target opponent reveals their hand. You choose an artifact, instant, or sorcery card from it and exile that card."
Mesmeric Fiend80%
$0.73↑#206550.25↓24.7 years↑
"When this creature enters, target opponent reveals their hand and you choose a nonland card from it. Exile that card."
Tidehollow Sculler80%
$0.14↓#225680.06↓18.0 years↓
"When this creature enters, target opponent reveals their hand and you choose a nonland card from it. Exile that card."
Pick the Brain80%
$0.10↓#30203↓0.25↓10.5 years↓
"Target opponent reveals their hand. You choose a nonland card from it and exile that card."
Memory Leak80%
$0.17↓#227260.05↓6.5 years↓
"Target opponent reveals their hand. You choose a nonland card from that player's graveyard or hand and exile it."
Null Summoner79%
$0.18↓#28981↓0.29↓0.0 years↓
"When this creature enters, if you cast it, target opponent reveals their hand. You choose a nonland card from it. Exile that card."
Specter's Shriek78%
$0.11↓#275870.477.0 years↓
"Target opponent reveals their hand. You may choose a nonland card from it. If you do, that player exiles that card. If a nonblack card is exiled this way, exile a card from your hand."
Doomfall78%
$0.20#218590.44↓9.3 years↓
"• Target opponent reveals their hand. You choose a nonland card from it. Exile that card."
Never Happened78%
$0.07↓#260500.29↓8.0 years↓
"Target opponent reveals their hand. You choose a nonland card from that player's graveyard or hand and exile it."
Aggressive Negotiations76%
$0.15↓#15317↑0.10↓1.5 years↓
"Target opponent reveals their hand. You choose a nonland card from it and exile that card. Put a +1/+1 counter on up to one target creature you control."
Transgress the Mind76%
$0.10↓#258200.29↓11.0 years↓
"Target player reveals their hand. You choose a card from it with mana value 3 or greater and exile that card."
Soul Search76%
$0.15↓#237200.06↓2.7 years↓
"Target opponent reveals their hand. You choose a nonland card from it. Exile that card. If the card's mana value is 1 or less, create a 1/1 white and black Spirit creature token with flying."
Brain Maggot76%
$0.28↑#16288↑0.24↓12.8 years↓
"When this creature enters, target opponent reveals their hand and you choose a nonland card from it. Exile that card until this creature leaves the battlefield."
Pyrostatic Pillar76%
$2.74↑#12463↑0.36↓23.4 years
"Whenever a player casts a spell with mana value 3 or less, this enchantment deals 2 damage to that player."
Skullcap Snail76%
$0.15↓#18770↑0.06↓2.9 years↓
"When this creature enters, target opponent exiles a card from their hand."
Unscrupulous Agent76%
$0.14↓#215390.33↓2.7 years↓
"When this creature enters, target opponent exiles a card from their hand."