Rug of Smothering 
Artifact Creature — Construct
$0.53 #3849 0.63 4.2 years
Flying
Whenever a player casts a spell, they lose 1 life for each spell they've cast this turn.
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Cards similar to Rug of Smothering expected a card that isn't here?
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$0.25↓#6514↓0.14↓5.1 years
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$0.67↑#4998↓1.12↑8.4 years↑
"Each spell a player casts costs 
more to cast for each other spell that player has cast this turn."
more to cast for each other spell that player has cast this turn."
Ancient Gold Dragon78%
$31.22↑#2119↑0.714.2 years
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$7.73↑#2677↑0.48↓4.2 years
"Flying"
Soot Imp76%
$1.42↑#13393↓0.5718.1 years↑
"Whenever a player casts a nonblack spell, that player loses 1 life."
Ancient Bronze Dragon75%
$17.24↑#2606↑0.604.2 years
"Flying"
Liesa, Shroud of Dusk74%
$0.65↑#5625↓0.80↑5.8 years↑
"Whenever a player casts a spell, they lose 2 life."
Wizened Snitches74%
$0.28↓#14590↓0.93↑20.9 years↑
"Flying"
Curse of Wizardry72%
$0.27↓#19775↓0.42↓16.4 years↑
"Whenever a player casts a spell of the chosen color, that player loses 1 life."
Bloodhunter Bat72%
$0.05↓#17632↓0.00↓14.1 years↑
"Flying"
Ebon Drake70%
$1.28↑#10309↓0.50↓22.3 years↑
"Whenever a player casts a spell, you lose 1 life."
Mai, Scornful Striker70%
$1.17↑#5185↓0.00↓0.8 years↓
"Whenever a player casts a noncreature spell, they lose 2 life."