Massacre Girl, Known Killer

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Massacre Girl, Known Killer is a 4/4 menace legendary that grants wither to all your creatures and draws a card whenever an opponent's creature dies with toughness below 1 (i.e., killed by wither/-1/-1 counters). She is the signature commander and 99-card engine for -1/-1 counter strategies, where repeated damage kills creatures, triggers the draw engine, and chains into more cards. The BB pip cost and conditional draw (requires wither interactions to reduce toughness below 1) make her less impactful outside dedicated shells; plus-one-counters and infect strategies actively conflict since wither counters and +1/+1 counters cancel each other out.

• Wither's -1/-1 counters and +1/+1 counters cancel each other immediately as a state-based action, making Massacre Girl actively counterproductive in any deck that cares about +1/+1 counters on its own creatures.

  tagging · claude-sonnet-4-6

• The draw trigger checks the creature's toughness at the time it dies — toughness 'less than 1' means 0 or negative, so the trigger only fires if the creature was reduced by at least its full base toughness worth of -1/-1 counters. A 2/2 hit by a 2-power wither creature reaches 2/0 and dies triggering the draw; a 2/2 hit by a 1-power wither creature only reaches 2/1 and does NOT trigger.

  tagging · claude-sonnet-4-6

• In multiplayer Commander she is best evaluated as a commander (where she guarantees the wither engine), not as a 99 card, because her draw trigger requires an active board of wither creatures and she herself only provides menace/wither without guaranteeing other wither sources in the 99.

  tagging · claude-sonnet-4-6

• EDHREC rank: #1,637