Ghitu Fire-Eater 

Creature — Human Nomad
{T}, Sacrifice this creature: It deals damage equal to its power to any target.
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Cards that do something similar expected a card that isn't here?
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Blazing Bomb 85%
$0.14#15757
"{T}, Sacrifice this creature: It deals damage equal to its power to target creature. Activate only as a sorcery."
Cephalid Pathmage 85%
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"{T}, Sacrifice this creature: Target creature can't be blocked this turn."
Liliana's Steward 84%
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"{T}, Sacrifice this creature: Target opponent discards a card. Activate only as a sorcery."
Cliffside Rescuer 83%
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"{T}, Sacrifice this creature: Target permanent you control gains protection from each of your opponents until end of turn."
Bloodshot Cyclops 83%
$0.40#17214
"{T}, Sacrifice a creature: This creature deals damage equal to the sacrificed creature's power to any target."
Magus of the Jar 82%
$1.39#16033
"{T}, Sacrifice this creature: Each player exiles all cards from their hand face down and draws seven cards. At the beginning of the next end step, each player discards their hand and returns to their hand each card they exiled this way."