Metalhead

an artifact is sacrificed — 761 cards in the game can cause this (Metalhead is one).

1. Megatron, Tyrant // Megatron, Destructive Force — When you sacrifice another artifact to Metalhead, Megatron, Tyrant // Megatron, Destructive Force deals the sacrificed artifact's mana value damage
2. Carrot Cake — When Carrot Cake is sacrificed thanks to Metalhead, it makes a token
3. Heaped Harvest — When Heaped Harvest is sacrificed thanks to Metalhead, it searches a library
4. Moonstone Eulogist — When you sacrifice another artifact to Metalhead, Moonstone Eulogist puts a +1/+1 counter on itself
5. Magnetic Snuffler — When you sacrifice another artifact to Metalhead, Magnetic Snuffler puts a +1/+1 counter on itself
6. Gleaming Geardrake — When you sacrifice another artifact to Metalhead, Gleaming Geardrake puts a +1/+1 counter on itself
7. Esoteric Duplicator — When you sacrifice another artifact to Metalhead, Esoteric Duplicator makes a token
8. Biotech Specialist — When you sacrifice another artifact to Metalhead, Biotech Specialist deals 2 damage
9. Jaws, Relentless Predator — When you sacrifice another artifact to Metalhead, Jaws, Relentless Predator deals 1 damage
10. Crime Novelist — When you sacrifice another artifact to Metalhead, Crime Novelist puts a +1/+1 counter on itself

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

an artifact in a graveyard — 1,226 cards in the game can cause this (Metalhead is one).

Metalhead puts cards into the:

1. Loran, Disciple of History — graveyard that Loran, Disciple of History can bring back
2. The Emperor of Palamecia // The Lord Master of Hell — graveyard, and The Emperor of Palamecia // The Lord Master of Hell gets bigger
3. Builder's Talent — graveyard that Builder's Talent can bring back
4. Trading Post — graveyard that Trading Post can bring back
5. Tasigur, the Golden Fang — graveyard that Tasigur, the Golden Fang can bring back
6. Serpent of the Pass — graveyard, and Serpent of the Pass gets bigger
7. Emeria Shepherd — graveyard that Emeria Shepherd can bring back
8. Goblin Engineer — graveyard that Goblin Engineer can bring back
9. Daretti, Rocketeer Engineer — graveyard that Daretti, Rocketeer Engineer can bring back
10. Scrap Welder — graveyard that Scrap Welder can bring back

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

a nontoken artifact is put into a graveyard from the battlefield — 1,226 cards in the game can cause this (Metalhead is one).

When you sacrifice another artifact to Metalhead:

1. Pia's Revolution — deals 3 damage
2. Farid, Enterprising Salvager — makes a token
3. Psychomancer — makes each opponent lose 1 life
4. Sly Requisitioner — makes a token
5. Slagstone Refinery — makes a token
6. Ratchet, Field Medic // Ratchet, Rescue Racer — triggers

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

an artifact attacks — 1,243 cards in the game can cause this (Metalhead is one).

When Metalhead attacks:

1. Alibou, Ancient Witness — deals X damage
2. Bio-Asset Allocator — makes each opponent lose 1 life
3. Assaultron Dominator — puts a counter on a permanent
4. Aloy, Savior of Meridian — triggers

an artifact deals combat damage — 1,243 cards in the game can cause this (Metalhead is one).

When Metalhead deals combat damage:

1. Locutus of Borg — makes a token
2. Sharding Sphinx — makes a token
3. Antagonist Incorporator — makes a token
4. Research Thief — draws you 1 card
5. Thopter Spy Network — draws you 1 card
6. Hive Mind Coprocessor — makes you lose life
7. Pia Nalaar, Chief Mechanic — puts a counter on a permanent you control
8. Automated Assembly Line — triggers

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

a nontoken artifact deals combat damage — 1,243 cards in the game can cause this (Metalhead is one).

1. Virulent Silencer — When Metalhead deals combat damage, Virulent Silencer puts 2 counters on a permanent

an artifact goes to a graveyard — 1,250 cards in the game can cause this (Metalhead is one).

When an artifact hits the graveyard thanks to Metalhead:

1. Ultron the Annihilator — makes each opponent lose 1 life
2. Ultron's Auxiliary — puts a +1/+1 counter on itself

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

When you sacrifice another artifact to Metalhead:

1. Tezzeret's Touch — brings a card back
2. Krenko, Baron of Tin Street — makes a token
3. Syr Ginger, the Meal Ender — puts a +1/+1 counter on itself
4. Shard of the Void Dragon — puts 2 +1/+1 counters on itself
5. Ich-Tekik, Salvage Splicer — puts a +1/+1 counter on itself
6. Gremlin Infestation — makes a token
7. Summoning Station — untaps itself
8. Marionette Master — makes each opponent lose life equal to this creature's power
9. Fangren Marauder — gains you 5 life
10. Disciple of the Vault — makes each opponent lose 1 life

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

an artifact leaves the battlefield — 1,680 cards in the game can cause this (Metalhead is one).

1. Sludge Strider — When you sacrifice another artifact to Metalhead, Sludge Strider makes a player lose 1 life

a creature gets a counter — 2,691 cards in the game can cause this (Metalhead is one).

When Metalhead gets a counter:

1. Hollowmurk Siege — draws you 1 card
2. Ant-Man, Colony Commander — makes a token
3. Earth Kingdom General — gains you that much life
4. Casey Jones, Back Alley Brute — deals that much damage

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

an artifact it grants types to — 4,531 cards in the game can cause this.

1. Silverskin Armor — Silverskin Armor gives Metalhead an extra creature type

4,530 other cards cause it too. These are the ones with the most connections.

anything attacks — 17,934 cards in the game can cause this (Metalhead is one).

1. Shaun, Father of Synths — When Metalhead attacks, Shaun, Father of Synths makes a token

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

a creature attacks — 17,934 cards in the game can cause this (Metalhead is one).

1. Invasion of New Capenna // Holy Frazzle-Cannon — When Metalhead attacks, Invasion of New Capenna // Holy Frazzle-Cannon puts counters on a permanent

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

a creature enters the battlefield — 19,800 cards in the game can cause this (Metalhead is one).

When Metalhead enters:

1. Scurry Oak — puts a counter on itself
2. Fathom Mage — puts a counter on itself

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

put anything onto the battlefield — 26,499 cards in the game can cause this.

When Metalhead enters:

1. Lifeline — thanks to Lifeline, it triggers
2. Mirrorworks — because Mirrorworks copies it, its ability triggers again
3. Shuri's Fabricator — thanks to Shuri's Fabricator, it triggers
4. Mirage Mockery — because Mirage Mockery copies it, its ability triggers again
5. Saheeli's Artistry — because Saheeli's Artistry copies it, its ability triggers again
6. March of Progress — because March of Progress copies it, its ability triggers again
7. Getaway Barrel — thanks to Getaway Barrel, it triggers
8. Vexing Puzzlebox — thanks to Vexing Puzzlebox, it triggers
9. Echo Storm — because Echo Storm copies it, its ability triggers again
10. Skyclave Relic — because Skyclave Relic copies it, its ability triggers again

26,489 other cards cause it too. These are the ones with the most connections.