Their Number Is Legion

a Warrior creature enters the battlefield — 1,401 cards in the game can cause this (Their Number Is Legion is one).

1. Obsidian Battle-Axe — When a Warrior enters thanks to Their Number Is Legion, Obsidian Battle-Axe triggers

a Warrior enters the battlefield — 1,403 cards in the game can cause this (Their Number Is Legion is one).

When a Warrior enters thanks to Their Number Is Legion:

1. Mardu Woe-Reaper — hits a graveyard
2. Thrasher Brute — makes each opponent lose 1 life
3. Decorated Champion — puts a +1/+1 counter on itself

life is gained — 2,076 cards in the game can cause this (Their Number Is Legion is one).

When Their Number Is Legion gains life:

1. Dina, Soul Steeper — makes each opponent lose 1 life
2. Marina Vendrell's Grimoire — draws you that many cards
3. South Wind Avatar — makes each opponent lose 1 life
4. Rodolf Duskbringer — grants indestructible
5. Fiendish Panda — puts a +1/+1 counter on itself
6. Veinwitch Coven — brings a card back
7. Cleric Class — puts a counter on a creature
8. Lich's Mastery — draws you that many cards
9. Wall of Limbs — puts a +1/+1 counter on itself
10. Ratchet, Field Medic // Ratchet, Rescue Racer — triggers

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

anything is exiled — 2,497 cards in the game can cause this (Their Number Is Legion is one).

1. The War Doctor — When Their Number Is Legion is exiled, The War Doctor puts a time counter on itself

anything leaves a graveyard — 2,503 cards in the game can cause this (Their Number Is Legion is one).

When Their Number Is Legion leaves a graveyard:

1. Blastoneuron — makes each opponent lose 1 life
2. Defiled Crypt // Cadaver Lab — makes a token
3. Teval, the Balanced Scale — makes a token
4. Hologram Stalker — makes a token
5. Tormod, the Desecrator — makes a token
6. Quintorius, Field Historian — makes a token
7. Garrison Excavator — makes a token
8. Amzu, Swarm's Hunger — makes a token
9. Kirol, History Buff // Pack a Punch — becomes prepared
10. Teval's Judgment — triggers

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

a creature token enters the battlefield — 2,799 cards in the game can cause this (Their Number Is Legion is one).

When a Necron or Warrior enters thanks to Their Number Is Legion:

1. Securitron Squadron — puts a counter on a permanent
2. Anointer Priest — gains you 1 life
3. Nesting Dovehawk — puts a +1/+1 counter on itself

a creature token is created — 2,799 cards in the game can cause this (Their Number Is Legion is one).

1. Staff of the Storyteller — When Their Number Is Legion makes a Necron or Warrior token, Staff of the Storyteller puts a story counter on itself

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

a sorcery it makes cheaper to cast — 3,585 cards in the game can cause this.

1. Cloud Key — Cloud Key reduces what Their Number Is Legion costs
2. Helm of Awakening — Helm of Awakening reduces what Their Number Is Legion costs
3. Locket of Yesterdays — Locket of Yesterdays reduces what Their Number Is Legion costs
4. Seal of the Guildpact — Seal of the Guildpact reduces what Their Number Is Legion costs
5. Stone Calendar — Stone Calendar reduces what Their Number Is Legion costs
6. Trinisphere — Trinisphere reduces what Their Number Is Legion costs

3,579 other cards cause it too. These are the ones with the most connections.

a sorcery it grants abilities to — 3,585 cards in the game can cause this.

1. Thrumming Stone — Thrumming Stone gives Their Number Is Legion ripple

3,584 other cards cause it too. These are the ones with the most connections.

an artifact you control — 3,641 cards in the game can cause this (Their Number Is Legion is one).

When you cast Their Number Is Legion, it counts:

1. Relic Amulet — and gains more life
2. Chimeric Egg — and gains more life

3,639 other cards care about it too. These are the ones with the most connections.

a token enters the battlefield — 3,710 cards in the game can cause this (Their Number Is Legion is one).

When a Necron or Warrior enters thanks to Their Number Is Legion:

1. Baron Bertram Graywater — makes a token
2. Marneus Calgar — draws you 1 card
3. Belladonna Took — gains you 1 life
4. Kambal, Profiteering Mayor — makes each opponent lose 1 life
5. Lucy MacLean, Positively Armed — makes a token
6. Mister Fantastic, Reed Richards — draws you 1 card
7. Cloakwood Swarmkeeper — puts a +1/+1 counter on itself
8. Woodland Champion — puts that many +1/+1 counters on itself
9. Leonardo, the Balance — puts a counter on a creature
10. Spiritcall Enthusiast // Scrollboost — becomes prepared

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

a token is created — 3,711 cards in the game can cause this (Their Number Is Legion is one).

When Their Number Is Legion makes a Necron or Warrior token:

1. Akim, the Soaring Wind — makes a token
2. Idol of Oblivion — draws you 1 card
3. Rosie Cotton of South Lane — puts a counter on a permanent
4. Mirkwood Bats — makes each opponent lose 1 life

17 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 (Their Number Is Legion is one).

When Their Number Is Legion is cast:

1. Spellweaver Volute — copies a spell
2. Lilah, Undefeated Slickshot — gets +1/+1
3. Niblis of Frost — gets +1/+1
4. Primeval Bounty — puts 3 counters on a creature
5. Tetsuko Umezawa, Pursuer — gets +1/+1
6. Thor, God of Thunder — deals that spell's mana value damage
7. Krile Baldesion — brings a card back
8. Summon: Good King Mog XII — makes a token
9. Kykar, Wind's Fury — makes a token
10. Blood Funnel — sacrifices a creature

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

an artifact it makes cheaper to cast — 4,531 cards in the game can cause this.

1. Jet Medallion — Jet Medallion reduces what Their Number Is Legion costs

4,530 other cards cause it too. These are the ones with the most connections.

an artifact enters the battlefield — 4,643 cards in the game can cause this (Their Number Is Legion is one).

When a Necron or Warrior enters thanks to Their Number Is Legion:

1. Transplant Theorist — draws you 1 card
2. Elvish Archivist — puts 2 +1/+1 counters on itself
3. Golbez, Crystal Collector — surveils
4. Sludge Strider — makes a player lose 1 life
5. Underhanded Designs — makes each opponent lose 1 life

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