Fireball

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

When Fireball deals noncombat damage:

1. Quest for Pure Flame — puts a quest counter on itself
2. Soul-Scar Mage — puts that many counters on a permanent
3. Fear of Burning Alive — deals that amount damage
4. Niv-Mizzet, Visionary — draws you that many cards
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 (Fireball is one).

When Fireball 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.

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

When Fireball is cast:

1. Tomik, Izzet Sparkmage — gets +1/+1
2. Spellweaver Volute — copies a spell
3. Lilah, Undefeated Slickshot — gets +1/+1
4. Niblis of Frost — gets +1/+1
5. Primeval Bounty — puts 3 counters on a creature
6. Tetsuko Umezawa, Pursuer — gets +1/+1
7. Thor, God of Thunder — deals that spell's mana value damage
8. Krile Baldesion — brings a card back
9. Artist's Talent — draws and discards
10. Blood Funnel — sacrifices a creature

424 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 (Fireball is one).

When Fireball is dealt damage:

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.

anything is cast — 31,128 cards in the game can cause this (Fireball is one).

When Fireball is cast:

1. Windrider Wizard — draws you 1 card
2. Relic Amulet — puts a charge counter on itself
3. Rockslide Sorcerer — deals 1 damage
4. Umara Wizard // Umara Skyfalls — grants flying
5. Alania, Divergent Storm — makes an opponent draw 1 card
6. Umara Mystic — gets +2/+0
7. Master of Winds — triggers

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