Geistblast

a sorcery is copied — 83 cards in the game can cause this (Geistblast is one).

When Geistblast is copied:

1. Extus, Oriq Overlord // Awaken the Blood Avatar — brings a card back
2. Storm-Kiln Artist — makes a token
3. Professor Onyx — makes each opponent lose 2 life
4. Zaffai, Thunder Conductor — scries
5. Deekah, Fractal Theorist — makes a token
6. Elemental Expressionist — grants a keyword
7. Sedgemoor Witch — makes a token
8. Witherbloom Apprentice — makes each opponent lose 1 life
9. Jadzi, Oracle of Arcavios // Journey to the Oracle — puts a creature, artifact, enchantment, instant, sorcery, planeswalker or battle onto the battlefield
10. Ashling, Flame Dancer — draws and discards

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

an instant is copied — 87 cards in the game can cause this (Geistblast is one).

1. Kalamax, the Stormsire — When Geistblast is copied, Kalamax, the Stormsire puts a +1/+1 counter on itself

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

an instant leaves a graveyard — 202 cards in the game can cause this (Geistblast is one).

1. Murktide Regent — When Geistblast leaves a graveyard, Murktide Regent puts a +1/+1 counter on itself

anything is exiled — 2,497 cards in the game can cause this (Geistblast is one).

1. The War Doctor — When Geistblast is exiled, The War Doctor puts a time counter on itself

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

When Geistblast 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.

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

When Geistblast 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 (Geistblast is one).

When Geistblast 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 instant is cast — 3,931 cards in the game can cause this (Geistblast is one).

When Geistblast is cast:

1. Tomik, Izzet Sparkmage — gets +1/+1
2. Tor Wauki the Younger — deals 2 damage
3. Lunar Mystic — draws you 1 card
4. Ojer Pakpatiq, Deepest Epoch // Temple of Cyclical Time — grants rebound
5. Repeated Reverberation — copies an ability
6. Riku of Two Reflections — copies a spell
7. Sword of Wealth and Power — copies a spell
8. Lilah, Undefeated Slickshot — gets +1/+1
9. Artist's Talent — draws and discards
10. In the Eye of Chaos — counters a spell

427 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 (Geistblast is one).

When Geistblast 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. Swarmborn Giant — sacrifices itself
6. Risona, Asari Commander — triggers
7. Azor's Elocutors — triggers

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