Agonizing Syphon

life is gained — 2,076 cards in the game can cause this (Agonizing Syphon is one).

When Agonizing Syphon 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 deals noncombat damage — 3,068 cards in the game can cause this (Agonizing Syphon is one).

When Agonizing Syphon 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 (Agonizing Syphon is one).

When Agonizing Syphon 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. Nesting Bot — raises your speed
9. Howlsquad Heavy — raises your speed
10. Oath of Lim-Dûl — sacrifices an enchantment

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 (Agonizing Syphon is one).

When Agonizing Syphon 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 (Agonizing Syphon is one).

When Agonizing Syphon 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. Swarmborn Giant — sacrifices itself
5. Risona, Asari Commander — triggers

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