Massacre Wurm

Public decks that run Massacre Wurm

• Endless Punishment - Duskmourn: House of Horror Commander, led by Valgavoth, Harrower of Souls
• Growing Threat - March of the Machine Commander, led by Brimaz, Blight of Oreskos
• Revenant Recon - Murders at Karlov Manor Commander, led by Mirko, Obsessive Theorist

Commanders that run Massacre Wurm most

Deck counts from EDHREC.

• Valgavoth, Harrower of Souls: 15,287 decks
• Meren of Clan Nel Toth: 9,225 decks
• Sephiroth, Fabled SOLDIER // Sephiroth, One-Winged Angel: 8,957 decks
• Hashaton, Scarab's Fist: 7,749 decks
• Henzie "Toolbox" Torre: 7,547 decks
• Yarok, the Desecrated: 6,293 decks
• Toxrill, the Corrosive: 6,034 decks
• Mirko, Obsessive Theorist: 5,770 decks

Often played with Massacre Wurm

Cards that show up in the same decks on EDHREC.

• Vulpine Harvester
• Darksteel Splicer
• Master Splicer
• Attentive Skywarden
• Wing Storm
• Progenitor Exarch
• Blade Splicer
• Pygmy Kavu
• Norn's Inquisitor
• Essence of Orthodoxy

Rulings

• 2020-06-23: Massacre Wurm's triggered ability triggers if a creature an opponent controls dies for any reason, including from its first ability reducing its toughness to 0, as long as Massacre Wurm remains on the battlefield.
• 2020-06-23: Massacre Wurm's first ability affects only creatures your opponents control at the time it resolves. Creatures they begin to control later in the turn won't get -2/-2.
• 2020-06-23: If your life total is brought to 0 or less at the same time that a creature an opponent controls is dealt lethal damage, you lose the game before Massacre Wurm's last ability goes on the stack.
• 2020-06-23: If a creature an opponent controls dies at the same time as Massacre Wurm, Massacre Wurm's last ability triggers for that creature.