Treacherous Terrain

a sorcery is discarded — 68 cards in the game can cause this (Treacherous Terrain is one).

When Treacherous Terrain makes a player discard a card:

1. Bone Miser — draws you 1 card
2. Oskar, Rubbish Reclaimer — brings a card back
3. Conspiracy Theorist — brings a card back
4. Veronica, Dissident Scribe — makes a token
5. Green Goblin, Nemesis — puts a counter on a Goblin
6. Surly Badgersaur — deals damage

1 other card cares about it too. These are the ones with the most connections.

a card is discarded — 2,042 cards in the game can cause this (Treacherous Terrain is one).

When Treacherous Terrain makes a player discard a card:

1. Ivora, Insatiable Heir — puts a +1/+1 counter on itself
2. Cool but Rude — deals 2 damage
3. Containment Construct — brings a card back
4. Moonstone, Harsh Mistress — brings a card back
5. Lazotep Chancellor — puts 2 counters on a Zombie or Army
6. Magmakin Artillerist — deals that much damage
7. Inti, Seneschal of the Sun — exiles a card from your library
8. Pitchstone Wall — sacrifices itself
9. Currency Converter — exiles it
10. Hostile Investigator — triggers

51 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 (Treacherous Terrain is one).

When Treacherous Terrain 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. Chandra's Incinerator — deals that much damage
5. Chandra's Pyreling — gets +1/+0
6. Talon of Pain — puts a charge counter on itself
7. Asgardian Inspiration — returns itself from the graveyard
8. Thor, Guardian of Midgard — exiles a card from your library
9. Virtue of Courage // Embereth Blaze — exiles a card from your library

37 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 (Treacherous Terrain is one).

When Treacherous Terrain 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. Hour of Victory — raises your speed

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 (Treacherous Terrain is one).

When Treacherous Terrain is cast:

1. Soul-Scar Mage — gets +1/+1
2. Tomik, Izzet Sparkmage — gets +1/+1
3. Spellweaver Volute — copies a spell
4. Lilah, Undefeated Slickshot — gets +1/+1
5. Niblis of Frost — gets +1/+1
6. Primeval Bounty — puts 3 counters on a creature
7. Tetsuko Umezawa, Pursuer — gets +1/+1
8. Thor, God of Thunder — deals that spell's mana value damage
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.

a card in a graveyard — 7,589 cards in the game can cause this (Treacherous Terrain is one).

1. Gale, Waterdeep Prodigy — When Treacherous Terrain is in the graveyard, Gale, Waterdeep Prodigy can bring it back
2. Transplant Theorist — When Treacherous Terrain is in the graveyard, Transplant Theorist can bring it back
3. Heart-Shaped Herb — When Treacherous Terrain is in the graveyard, Heart-Shaped Herb can bring it back
4. Wayward Angel — Treacherous Terrain fills your graveyard toward the 7 or more cards Wayward Angel needs
5. Victimize — When Treacherous Terrain is in the graveyard, Victimize can bring it back
6. Bound // Determined — When Treacherous Terrain is in the graveyard, Bound // Determined can bring it back
7. Enlightened Confidant — When Treacherous Terrain is in the graveyard, Enlightened Confidant can bring it back
8. Tergrid, God of Fright // Tergrid's Lantern — When Treacherous Terrain is in the graveyard, Tergrid, God of Fright // Tergrid's Lantern can bring it back
9. Aerith, Last Ancient — When Treacherous Terrain is in the graveyard, Aerith, Last Ancient can bring it back
10. Sivriss, Nightmare Speaker — When Treacherous Terrain is in the graveyard, Sivriss, Nightmare Speaker can bring it back

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

anything goes to a graveyard — 7,589 cards in the game can cause this (Treacherous Terrain is one).

When Treacherous Terrain hits the graveyard:

1. Quest for Ancient Secrets — puts a quest counter on itself
2. Planar Void — hits a graveyard
3. Measure of Wickedness — gives an opponent control of itself
4. Energy Field — sacrifices itself

7 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 (Treacherous Terrain is one).

1. Massacre Girl, Most Wanted — When an opponent is dealt damage thanks to Treacherous Terrain, Massacre Girl, Most Wanted puts a +1/+1 counter on itself

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