Vengeful Tracker 
Creature — Human Detective
$0.13 #13958 0.06 2.7 years
Whenever an opponent sacrifices an artifact, this creature deals 2 damage to them.
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Cards similar to Vengeful Tracker expected a card that isn't here?
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Magnetic Mine83%
$0.32↑#18516↓0.1215.7 years↑
"Whenever another artifact is put into a graveyard from the battlefield, this artifact deals 2 damage to that artifact's controller."
Jaws, Relentless Predator79%
$170.83↑#9634↑1.04↑1.0 years↓
"Whenever a noncreature artifact is sacrificed or destroyed, this card deals 1 damage to each opponent."
Sardian Avenger79%
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"Whenever an artifact an opponent controls is put into a graveyard from the battlefield, this creature deals 1 damage to that player."
Harsh Mentor79%
$0.34↑#2515↑0.47↑9.5 years↑
"Whenever an opponent activates an ability of an artifact, creature, or land on the battlefield, if it isn't a mana ability, this creature deals 2 damage to that player."
Immolation Shaman76%
$0.43↑#7735↑0.117.7 years↑
"Whenever an opponent activates an ability of an artifact, creature, or land that isn't a mana ability, this creature deals 1 damage to that player."
Mayhem Devil73%
$0.31↑#574↑0.53↑7.5 years↑
"Whenever a player sacrifices a permanent, this creature deals 1 damage to any target."
Avalanche of Sector 772%
$0.24↑#10047↑0.111.4 years↓
"Whenever an opponent activates an ability of an artifact they control, this card deals 1 damage to that player."
Gremlin Infestation72%
$0.04↓#29340↓0.26↑9.7 years↑
"At the beginning of your end step, this Aura deals 2 damage to enchanted artifact's controller."
Eidolon of the Great Revel71%
$2.22↑#8389↑0.56↑12.5 years↑
"Whenever a player casts a spell with mana value 3 or less, this creature deals 2 damage to that player."
Curse Artifact70%
$0.95↑#29178↓0.19↑32.2 years↑
"At the beginning of the upkeep of enchanted artifact's controller, this Aura deals 2 damage to that player unless they sacrifice that artifact."
Warp Artifact70%
$0.32↑#29272↓0.1233.2 years↑
"At the beginning of the upkeep of enchanted artifact's controller, this Aura deals 1 damage to that player."