Massacre

anything leaves the battlefield — 1 card in the game can cause this (Massacre is one).

1. Electro, Assaulting Battery — When Electro, Assaulting Battery leaves the battlefield thanks to Massacre, it triggers
2. Chainer, Dementia Master — When Chainer, Dementia Master leaves the battlefield thanks to Massacre, it exiles a Nightmare

a spell is cast — 155 cards in the game can cause this (Massacre is one).

When Massacre is cast:

1. Glaring Fleshraker — makes a token
2. The Kingpin of Crime — drains each opponent
3. Leader's Talent — puts a counter on a creature
4. Nita, Forum Conciliator — puts a counter on a creature
5. Treasury Thrull — drains each opponent
6. Life Insurance — drains each opponent
7. Sorin of House Markov // Sorin, Ravenous Neonate — drains each opponent
8. Syndicate Heavy — drains each opponent
9. Norin the Wary — flickers itself
10. Hunting Grounds — puts a creature onto the battlefield

456 other cards care about it too. These are the ones with the most connections.

a creature in a graveyard — 2,769 cards in the game can cause this (Massacre is one).

Massacre puts cards into the:

1. Sauron, Lord of the Rings — graveyard that Sauron, Lord of the Rings can bring back
2. Moira and Teshar — graveyard that Moira and Teshar can bring back
3. Old Stickfingers — graveyard, and Old Stickfingers gets bigger
4. Teshar, Ancestor's Apostle — graveyard that Teshar, Ancestor's Apostle can bring back
5. Tethmos High Priest — graveyard that Tethmos High Priest can bring back
6. Artisan of Kozilek — graveyard that Artisan of Kozilek can bring back
7. Havengul Lich — graveyard that Havengul Lich can bring back
8. Liliana the Repentant — graveyard that Liliana the Repentant can bring back
9. Paleoloth — graveyard that Paleoloth can bring back
10. Chainer, Nightmare Adept — graveyard that Chainer, Nightmare Adept can bring back

799 other cards care about it too. These are the ones with the most connections.

a nontoken creature dies — 2,769 cards in the game can cause this (Massacre is one).

When a creature dies thanks to Massacre:

1. Zahur, Glory's Past — makes a token
2. Vraska, the Silencer — brings a card back
3. Liesa, Forgotten Archangel — brings a card back
4. Avacyn, Angel of Horror — brings a card back
5. Yedora, Grave Gardener — brings a card back
6. Nim Deathmantle — brings a card back
7. Valkyrie's Call — brings a card back
8. Decaying Soil — brings a card back
9. High-Society Hunter — draws you 1 card
10. Overseer of the Damned — makes a token

60 other cards care about it too. These are the ones with the most connections.

a creature dies — 2,830 cards in the game can cause this (Massacre is one).

1. Voice of Resurgence — When Voice of Resurgence dies thanks to Massacre, it makes a token
2. Auspicious Ancestor — When Auspicious Ancestor dies thanks to Massacre, it gains you 3 life
3. Flaming Tyrannosaurus — When Flaming Tyrannosaurus dies thanks to Massacre, it deals its power damage
4. Pious Evangel // Wayward Disciple — When a creature dies thanks to Massacre, Pious Evangel // Wayward Disciple makes each opponent lose 1 life
5. Daxos, Blessed by the Sun — When a creature dies thanks to Massacre, Daxos, Blessed by the Sun gains you 1 life
6. Elas il-Kor, Sadistic Pilgrim — When a creature dies thanks to Massacre, Elas il-Kor, Sadistic Pilgrim makes each opponent lose 1 life
7. Shriveling Rot — When a creature dies thanks to Massacre, Shriveling Rot makes a player lose life equal to its toughness
8. Jeskai Sage — When Jeskai Sage dies thanks to Massacre, it draws you 1 card
9. Cyclops Superconductor — When Cyclops Superconductor dies thanks to Massacre, it triggers
10. Saffi Eriksdotter — When a creature dies thanks to Massacre, Saffi Eriksdotter sacrifices itself

454 other cards care about it too. These are the ones with the most connections.

a creature goes to a graveyard — 3,011 cards in the game can cause this (Massacre is one).

When a creature hits the graveyard thanks to Massacre:

1. Lorcan, Warlock Collector — brings a card back
2. Robot Domination — draws you 1 card
3. Lazav, Dimir Mastermind — copies a permanent
4. Profane Memento — gains you 1 life
5. Dennick, Pious Apprentice // Dennick, Pious Apparition — triggers
6. Soulcipher Board // Cipherbound Spirit — triggers

8 other cards care about it too. These are the ones with the most connections.

a sorcery is cast — 3,720 cards in the game can cause this (Massacre is one).

When Massacre is cast:

1. Spellweaver Volute — copies a spell
2. Riku of Two Reflections — copies a spell
3. Sword of Wealth and Power — copies a spell
4. Lilah, Undefeated Slickshot — gets +1/+1
5. Niblis of Frost — taps a creature an opponent controls

429 other cards care about it too. These are the ones with the most connections.

a creature leaves the battlefield — 4,238 cards in the game can cause this (Massacre is one).

1. Ninja Teen — When a creature leaves the battlefield thanks to Massacre, Ninja Teen makes each opponent lose 1 life

31 other cards care about it too. These are the ones with the most connections.

a permanent is put into a graveyard from the battlefield — 5,057 cards in the game can cause this (Massacre is one).

1. Gerrard, Weatherlight Hero — When Gerrard, Weatherlight Hero dies thanks to Massacre, it exiles itself

16 other cards care about it too. These are the ones with the most connections.

a card in a graveyard — 7,589 cards in the game can cause this (Massacre is one).

1. Quintorius Kand — Massacre puts cards into the graveyard that Quintorius Kand can bring back
2. Havi, the All-Father — Massacre fills your graveyard toward the 4 or more cards Havi, the All-Father needs
3. Repentant Vampire — Massacre fills your graveyard toward the 7 or more cards Repentant Vampire needs
4. Athreos, Shroud-Veiled — Massacre puts cards into the graveyard that Athreos, Shroud-Veiled can bring back
5. Gale, Waterdeep Prodigy — Massacre puts cards into the graveyard that Gale, Waterdeep Prodigy can bring back

439 other cards care about it too. These are the ones with the most connections.