Blighted Blackthorn {4}{B}
Creature — Treefolk Warlock
Whenever this creature enters or attacks, you may blight 2. If you do, you draw a card and lose 1 life. (To blight 2, put two -1/-1 counters on a creature you control.)
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Cards that do something similar expected a card that isn't here?
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Rottenmouth Viper 86%
$5.48#2801
"Whenever this creature enters or attacks, put a blight counter on it. Then for each blight counter on it, each opponent loses 4 life unless that player sacrifices a nonland permanent of their choice or discards a card."
Hired Hexblade 83%
$0.10#23704
"When this creature enters, if mana from a Treasure was spent to cast it, you draw a card and you lose 1 life."