Scrapheap

an enchantment is put into a graveyard from the battlefield — 987 cards in the game can cause this.

1. The Filigree Sylex — When The Filigree Sylex is put into a graveyard from the battlefield, Scrapheap gains you 1 life
2. Bumbleflower's Sharepot — When Bumbleflower's Sharepot is put into a graveyard from the battlefield, Scrapheap gains you 1 life
3. Oblivion Stone — When Oblivion Stone is put into a graveyard from the battlefield, Scrapheap gains you 1 life
4. Lunatic Pandora — When Lunatic Pandora is put into a graveyard from the battlefield, Scrapheap gains you 1 life
5. Ratchet Bomb — When Ratchet Bomb is put into a graveyard from the battlefield, Scrapheap gains you 1 life
6. Urn of Godfire — When Urn of Godfire is put into a graveyard from the battlefield, Scrapheap gains you 1 life
7. Engineered Explosives — When Engineered Explosives is put into a graveyard from the battlefield, Scrapheap gains you 1 life
8. Thaumaton Torpedo — When Thaumaton Torpedo is put into a graveyard from the battlefield, Scrapheap gains you 1 life
9. Karn's Sylex — When Karn's Sylex is put into a graveyard from the battlefield, Scrapheap gains you 1 life
10. Boompile — When Boompile is put into a graveyard from the battlefield, Scrapheap gains you 1 life

977 other cards cause it too. These are the ones with the most connections.

an artifact is put into a graveyard from the battlefield — 1,254 cards in the game can cause this.

1. Chrome Dome — When an artifact is put into a graveyard from the battlefield thanks to Chrome Dome, Scrapheap gains you 1 life
2. Transmutation Font — When an artifact is put into a graveyard from the battlefield thanks to Transmutation Font, Scrapheap gains you 1 life
3. Gemini Engine — When a Construct is put into a graveyard from the battlefield thanks to Gemini Engine, Scrapheap gains you 1 life
4. Hornet Cannon — When an Insect is put into a graveyard from the battlefield thanks to Hornet Cannon, Scrapheap gains you 1 life

1,250 other cards cause it too. These are the ones with the most connections.

life is gained — 2,076 cards in the game can cause this (Scrapheap is one).

When Scrapheap gains life:

1. Dina, Soul Steeper — makes each opponent lose 1 life
2. Marina Vendrell's Grimoire — draws you that many cards
3. South Wind Avatar — makes each opponent lose 1 life
4. Rodolf Duskbringer — grants indestructible
5. Fiendish Panda — puts a +1/+1 counter on itself
6. Veinwitch Coven — brings a card back
7. Cleric Class — puts a counter on a creature
8. Lich's Mastery — draws you that many cards
9. Wall of Limbs — puts a +1/+1 counter on itself
10. Ratchet, Field Medic // Ratchet, Rescue Racer — triggers

84 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 (Scrapheap is one).

When Scrapheap is cast:

1. Mendicant Core, Guidelight — copies a spell
2. Sai, Master Thopterist — makes a token
3. Ravenous Robots — makes a token
4. Pinnacle Emissary — makes a token
5. Mirrodin Besieged — makes a token
6. Poetic Ingenuity — makes a token
7. Digsite Engineer — makes a token
8. Myrsmith — makes a token
9. Riddlesmith — draws you 1 card
10. Dr. Madison Li — puts a counter on a permanent you control

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

a nontoken artifact enters the battlefield — 3,768 cards in the game can cause this (Scrapheap is one).

When Scrapheap enters:

1. Ultron, Artificial Malevolence — makes a token
2. The Prydwen, Steel Flagship — makes a token
3. Conquest Mission — puts a quest counter on itself
4. Surge Conductor — proliferates
5. Replication Specialist — makes a token
6. Weapons Manufacturing — makes a token
7. Mirrorworks — makes a token

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

When Scrapheap enters:

1. Transplant Theorist — draws you 1 card
2. Elvish Archivist — puts 2 +1/+1 counters on itself
3. Golbez, Crystal Collector — surveils
4. Sludge Strider — makes a player lose 1 life
5. Underhanded Designs — makes each opponent lose 1 life
6. Mechan Assembler — makes a token
7. Glassdust Hulk — gets +1/+1
8. Rook Turret — draws you 1 card
9. Hedron Detonator — deals 1 damage
10. Pactdoll Terror — makes each opponent lose 1 life

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

anything enters the battlefield — 26,499 cards in the game can cause this (Scrapheap is one).

When Scrapheap enters:

1. HYDRA Assault Robot — deals 1 damage
2. Era of Innovation — puts a counter on a permanent you control

44 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 (Scrapheap is one).

When Scrapheap is cast:

1. Sokka, Bold Boomeranger — puts a +1/+1 counter on itself
2. Saheeli, Radiant Creator — puts a counter on a permanent you control

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