Thoughtseize

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

When Thoughtseize 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. Sangromancer — gains you 3 life
6. Lo and Li, Royal Advisors — puts a counter on an Advisor
7. Nath of the Gilt-Leaf — makes a token
8. Inti, Seneschal of the Sun — exiles a card from your library
9. Pitchstone Wall — sacrifices itself
10. Currency Converter — exiles it

51 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 (Thoughtseize is one).

When Thoughtseize makes a player lose life:

1. The Master of Lake-town — mills a card
2. Intermediate Chirography — puts a counter on a creature
3. Vilis, Broker of Blood — draws you that many cards
4. Vengeful Warchief — puts a +1/+1 counter on itself
5. Wax-Wane Witness — gets +1/+0
6. Oath of Lim-Dûl — sacrifices an enchantment
7. Marina Vendrell's Grimoire — triggers
8. Lich's Mastery — triggers
9. Lich's Tomb — sacrifices a permanent
10. Gonti's Machinations — puts a counter on a permanent you control

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 (Thoughtseize is one).

When Thoughtseize is cast:

1. Spellweaver Volute — copies a spell
2. Lilah, Undefeated Slickshot — gets +1/+1
3. Niblis of Frost — gets +1/+1
4. Primeval Bounty — puts 3 counters on a creature
5. Tetsuko Umezawa, Pursuer — gets +1/+1
6. Thor, God of Thunder — deals that spell's mana value damage
7. Krile Baldesion — brings a card back
8. Summon: Good King Mog XII — makes a token
9. Kykar, Wind's Fury — makes a token
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 (Thoughtseize is one).

1. Gale, Waterdeep Prodigy — Thoughtseize puts cards into the graveyard that Gale, Waterdeep Prodigy can bring back
2. Harness the Storm — Thoughtseize puts cards into the graveyard that Harness the Storm can bring back
3. Samwise Gamgee — Thoughtseize puts cards into the graveyard that Samwise Gamgee can bring back
4. Bloodbond March — Thoughtseize puts cards into the graveyard that Bloodbond March can bring back
5. Transplant Theorist — Thoughtseize puts cards into the graveyard that Transplant Theorist can bring back
6. Heart-Shaped Herb — Thoughtseize puts cards into the graveyard that Heart-Shaped Herb can bring back
7. Wayward Angel — Thoughtseize fills your graveyard toward the 7 or more cards Wayward Angel needs
8. Rescue from the Underworld — Thoughtseize puts cards into the graveyard that Rescue from the Underworld can bring back
9. Victimize — Thoughtseize puts cards into the graveyard that Victimize can bring back
10. Bound // Determined — Thoughtseize puts cards into the graveyard that Bound // Determined can bring 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 (Thoughtseize is one).

When a card hits the graveyard thanks to Thoughtseize:

1. The Haunt of Hightower — puts a +1/+1 counter on itself
2. Duskmantle Guildmage — makes each opponent lose 1 life
3. Vulturous Zombie — puts a +1/+1 counter on itself
4. Quest for Ancient Secrets — puts a quest counter on itself
5. Bloodchief Ascension — makes each opponent lose 2 life
6. Compost — draws you 1 card
7. Planar Void — hits a graveyard
8. Measure of Wickedness — gives an opponent control of itself
9. Energy Field — sacrifices itself

2 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 (Thoughtseize is one).

When Thoughtseize 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.