Heartseeker

a nontoken Equipment enters the battlefield — 649 cards in the game can cause this (Heartseeker is one).

1. Firion, Wild Rose Warrior — When Heartseeker enters, Firion, Wild Rose Warrior makes a token

an Equipment enters the battlefield — 658 cards in the game can cause this (Heartseeker is one).

When Heartseeker enters:

1. Puresteel Paladin — draws you 1 card
2. Sokka and Suki — makes a token
3. Barret, Avalanche Leader — makes a token
4. The Mighty Thor, Jane Foster — draws you 1 card
5. Giott, King of the Dwarves — draws and discards
6. Hammer of Nazahn — triggers
7. Sigarda's Aid — triggers

7 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 (Heartseeker is one).

Heartseeker 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 (Heartseeker is one).

When a creature dies thanks to Heartseeker:

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 (Heartseeker is one).

When a creature dies thanks to Heartseeker:

1. Chainsaw — puts a counter on a permanent
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
5. Shadows of the Past — scries
6. Shriveling Rot — makes a player lose life equal to its toughness
7. Meathook Massacre II — brings a card back
8. Ashnod's Intervention — brings a card back
9. Missy — brings a card back
10. Saffi Eriksdotter — sacrifices itself

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

a creature goes to a graveyard — 3,011 cards in the game can cause this (Heartseeker is one).

When a creature hits the graveyard thanks to Heartseeker:

1. Lorcan, Warlock Collector — brings a card back
2. Lazav, Dimir Mastermind — copies a permanent
3. Dennick, Pious Apprentice // Dennick, Pious Apparition — triggers

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

an artifact is cast — 3,683 cards in the game can cause this (Heartseeker is one).

When Heartseeker is cast:

1. Krile Baldesion — brings a card back
2. Cyclops Superconductor — gets +1/+1
3. Jeskai Sage — gets +1/+1

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

an artifact enters the battlefield — 4,643 cards in the game can cause this (Heartseeker is one).

1. Golbez, Crystal Collector — When Heartseeker enters, Golbez, Crystal Collector surveils

68 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 (Heartseeker is one).

1. Athreos, Shroud-Veiled — Heartseeker puts cards into the graveyard that Athreos, Shroud-Veiled can bring back

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