Leyline of Lightning

anything deals noncombat damage — 3,068 cards in the game can cause this (Leyline of Lightning is one).

When Leyline of Lightning deals noncombat damage:

1. Quest for Pure Flame — puts a quest counter on itself
2. Fear of Burning Alive — deals that amount damage
3. Niv-Mizzet, Visionary — draws you that many cards
4. Ghyrson Starn, Kelermorph — deals 2 damage
5. Chandra's Incinerator — deals that much damage
6. Chandra's Pyreling — gets +1/+0
7. Talon of Pain — puts a charge counter on itself
8. Asgardian Inspiration — returns itself from the graveyard
9. Thor, Guardian of Midgard — exiles a card from your library
10. Virtue of Courage // Embereth Blaze — exiles a card from your library

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

life is lost — 3,160 cards in the game can cause this (Leyline of Lightning is one).

When Leyline of Lightning makes a player lose life:

1. Far Fortune, End Boss — raises your speed
2. Zahur, Glory's Past — raises your speed
3. Mendicant Core, Guidelight — raises your speed
4. Aether Syphon — raises your speed
5. Vnwxt, Verbose Host — raises your speed
6. Embalmed Ascendant — raises your speed
7. Slick Imitator — raises your speed
8. Oath of Lim-Dûl — sacrifices an enchantment
9. Marina Vendrell's Grimoire — triggers
10. Lich's Mastery — triggers

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

an enchantment is cast — 3,673 cards in the game can cause this (Leyline of Lightning is one).

When Leyline of Lightning is cast:

1. Invasion of Regatha // Disciples of the Inferno — gets +1/+1
2. Soul-Scar Mage — gets +1/+1
3. Tomik, Izzet Sparkmage — gets +1/+1
4. Hallowed Haunting — makes a token
5. Daxos the Returned — puts a counter on a permanent
6. Tatsunari, Toad Rider — makes a token
7. Sythis, Harvest's Hand — gains you 1 life
8. Sigil of the Empty Throne — makes a token
9. Dawnhart Geist — gains you 2 life
10. Artist's Talent — draws and discards

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

a nontoken enchantment enters the battlefield — 3,691 cards in the game can cause this (Leyline of Lightning is one).

1. Historian's Boon — When Leyline of Lightning enters, Historian's Boon makes a token

an enchantment enters the battlefield — 3,743 cards in the game can cause this (Leyline of Lightning is one).

When Leyline of Lightning enters:

1. Calix, Guided by Fate — puts a counter on a creature
2. Elvish Archivist — draws you 1 card
3. Victor, Valgavoth's Seneschal — surveils
4. Strength from the Fallen — gives +X/+X, where X is the number of creature cards in your graveyard
5. Doomwake Giant — shrinks a creature by -1/-1
6. Cacophony Unleashed — turns something into a creature
7. Ghostly Dancers — makes a token
8. Thassa's Devourer — mills a card
9. Killian, Decisive Mentor — taps a creature
10. Thoughtrender Lamia — makes an opponent discard a card

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

anything is dealt damage — 19,812 cards in the game can cause this (Leyline of Lightning is one).

When a player is dealt damage thanks to Leyline of Lightning:

1. Massacre Girl, Most Wanted — puts a +1/+1 counter on itself
2. War Elemental — puts that many +1/+1 counters on itself
3. Darien, King of Kjeldor — makes that many tokens
4. Blood Hound — puts that many +1/+1 counters on itself
5. Chandra's Spitfire — gets +3/+0
6. Wildfire Elemental — gives +1/+0
7. Master of Barbs — gives +1/+0
8. Swarmborn Giant — sacrifices itself
9. Risona, Asari Commander — triggers
10. Azor's Elocutors — triggers

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