Leveler

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

When Leveler 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 (Leveler is one).

When Leveler 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 (Leveler is one).

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

anything is exiled — 2,497 cards in the game can cause this (Leveler is one).

1. The War Doctor — When a permanent is exiled thanks to Leveler, The War Doctor puts a time counter on itself
2. God-Eternal Oketra — When God-Eternal Oketra is exiled thanks to Leveler, it triggers

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

When Leveler 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 (Leveler is one).

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

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

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

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

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

When Leveler attacks:

1. Far Fortune, End Boss — deals 1 damage
2. Temmet, Naktamun's Will — draws you 1 card
3. Invisible Woman — triggers
4. Caesar, Legion's Emperor — sacrifices a creature
5. Guide of Souls — triggers
6. Campsite Cuisine — sacrifices a Food

132 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 (Leveler is one).

When Leveler attacks:

1. Adaptive Omnitool — searches a library
2. Saw — sacrifices a creature

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

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

1. Tide of War — When Leveler blocks, Tide of War sacrifices a creature

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

a creature is cast — 18,010 cards in the game can cause this (Leveler is one).

1. Primeval Bounty — When Leveler is cast, Primeval Bounty makes a token

90 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 (Leveler is one).

1. Pollywog Prodigy — When Leveler enters, Pollywog Prodigy puts a counter on itself
2. Slash, Reptile Rampager — When Leveler enters, Slash, Reptile Rampager deals 2 damage
3. Ray Fillet, Wave Warrior — When Leveler enters, Ray Fillet, Wave Warrior puts a counter on itself
4. The Neutrinos — When Leveler enters, The Neutrinos gets +1/+0
5. Wingnut, Bat on the Belfry — When Leveler enters, Wingnut, Bat on the Belfry grants flying, haste and menace
6. Aetherstorm Roc — When Leveler enters, Aetherstorm Roc puts a counter on a permanent you control
7. Raphael, Most Attitude — When Leveler enters, Raphael, Most Attitude exiles a card from your library

339 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 (Leveler is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Leveler enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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