Rust Elemental 
Artifact Creature — Elemental
$1.49 #6944 0.12 23.0 years
Flying
At the beginning of your upkeep, sacrifice another artifact. If you can't, tap this creature and you lose 4 life.
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Cards similar to Rust Elemental expected a card that isn't here?
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"Flying"
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+1 more matching line
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"At the beginning of your upkeep, sacrifice a creature other than this creature, then each opponent loses life equal to the sacrificed creature's power. If you can't sacrifice a creature, tap this creature and you lose 7 life."
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"Flying"
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"At the beginning of your upkeep, sacrifice a creature."
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"At the beginning of your upkeep, sacrifice a creature."
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"
, 
, Sacrifice an artifact: You gain 1 life."
, , Sacrifice an artifact: You gain 1 life."
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