Deathsprout

a land enters the battlefield — 1,560 cards in the game can cause this (Deathsprout is one).

When a land enters thanks to Deathsprout:

1. Primeval Bounty — gains you 3 life
2. Toph, Earthbending Master — puts a counter on a permanent
3. Dancing from Dark to Dawn — makes a token
4. Emeria Shepherd — brings a card back
5. Quest for the Necropolis — puts a quest counter on itself
6. Soul Stair Expedition — puts a quest counter on itself
7. Nissa of Shadowed Boughs — puts counters on a permanent
8. Thranduil, Sindarin Liege // Silvan Rally — makes a token
9. Silvan Reveler — returns itself from the graveyard
10. Floral Evoker — puts a +1/+1 counter on itself

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

a creature in a graveyard — 2,769 cards in the game can cause this (Deathsprout is one).

Deathsprout puts cards into the graveyard that:

1. Chainer, Dementia Master — can bring back
2. The Deck of Many Things — can bring back
3. Afterlife from the Loam — can bring back
4. Crypt Champion — can bring back
5. Victor, Valgavoth's Seneschal — can bring back
6. Push // Pull — can bring back
7. Vivien on the Hunt — can bring back
8. Virtus's Maneuver — can bring back
9. Dredger's Insight — can bring back
10. Bramble Familiar // Fetch Quest — can bring back

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

a nontoken creature dies — 2,769 cards in the game can cause this (Deathsprout is one).

When a creature dies thanks to Deathsprout:

1. Vraska, the Silencer — brings a card back
2. High-Society Hunter — draws you 1 card
3. Overseer of the Damned — makes a token
4. Shelob, Dread Weaver — hits a graveyard
5. Ghoulish Procession — makes a token
6. Ogre Slumlord — makes a token
7. Minotaur, Roxxon CEO — makes a token
8. Harvester of Souls — draws you 1 card
9. Magus of the Bridge — exiles itself
10. Koh, the Face Stealer — exiles it

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

a creature dies — 2,830 cards in the game can cause this (Deathsprout is one).

When a creature dies thanks to Deathsprout:

1. Ob Nixilis, Unshackled — puts a +1/+1 counter on itself
2. Journey to Eternity // Atzal, Cave of Eternity — brings a card back
3. Avatar Destiny — mills a card
4. Blood Spatter Analysis — mills a card

457 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 (Deathsprout is one).

When Deathsprout is cast:

1. Electro, Assaulting Battery — adds 1 mana
2. Krile Baldesion — brings a card back
3. Extus, Oriq Overlord // Awaken the Blood Avatar — brings a card back

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