Ruthless Deathfang 
Creature — Dragon
$0.19 #18500 0.24 11.6 years
Flying
Whenever you sacrifice a creature, target opponent sacrifices a creature of their choice.
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Cards similar to Ruthless Deathfang expected a card that isn't here?
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Ashling, the Extinguisher78%
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"Flying"
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Mirkwood Bats78%
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"Whenever you create or sacrifice a token, each opponent loses 1 life."
Riveteers Ascendancy77%
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"Whenever you sacrifice a creature, you may return target creature card with lesser mana value from your graveyard to the battlefield tapped. Do this only once each turn."
Predatory Nightstalker76%
$0.07↓#31336↓0.41↑28.3 years↑
"When this creature enters, you may have target opponent sacrifice a creature of their choice."
Mawcor76%
$0.31↑#28083↓0.11↓29.0 years↑
"Flying"
Malfegor76%
$0.47↑#14737↑0.56↑17.7 years↑
"Flying"
Phoenix Fleet Airship74%
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"Flying"
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"Flying"
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$0.21↑#9105↑0.206.5 years↓
"Whenever this creature mutates, each opponent sacrifices a creature of their choice."
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"Flying"
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"Whenever this card attacks, defending player sacrifices a creature with the least power among creatures they control."