Urza, Lord High Artificer

an Artificer enters the battlefield — 342 cards in the game can cause this (Urza is one).

1. Inventor's Goggles — When Urza, Lord High Artificer enters, Inventor's Goggles triggers

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

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

provide a creature to sacrifice — 2,720 cards in the game can cause this.

1. Jalira, Master Polymorphist — Urza, Lord High Artificer makes fodder for Jalira, Master Polymorphist
2. Polymorph — Urza, Lord High Artificer makes fodder for Polymorph
3. Proteus Staff — Urza, Lord High Artificer makes fodder for Proteus Staff
4. Synthetic Destiny — Urza, Lord High Artificer makes fodder for Synthetic Destiny
5. Mass Polymorph — Urza, Lord High Artificer makes fodder for Mass Polymorph

2,715 other cards cause it too. These are the ones with the most connections.

a creature token enters the battlefield — 2,799 cards in the game can cause this (Urza is one).

When a Construct enters thanks to Urza, Lord High Artificer:

1. Securitron Squadron — puts a counter on a permanent
2. Anointer Priest — gains you 1 life
3. Nesting Dovehawk — puts a +1/+1 counter on itself

a creature token is created — 2,799 cards in the game can cause this (Urza is one).

1. Staff of the Storyteller — When Urza, Lord High Artificer makes a Construct token, Staff of the Storyteller puts a story counter on itself

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

a token enters the battlefield — 3,710 cards in the game can cause this (Urza is one).

When a Construct enters thanks to Urza, Lord High Artificer:

1. Baron Bertram Graywater — makes a token
2. Marneus Calgar — draws you 1 card
3. Belladonna Took — gains you 1 life
4. Kambal, Profiteering Mayor — makes each opponent lose 1 life
5. Lucy MacLean, Positively Armed — makes a token
6. Mister Fantastic, Reed Richards — draws you 1 card
7. Cloakwood Swarmkeeper — puts a +1/+1 counter on itself
8. Woodland Champion — puts that many +1/+1 counters on itself
9. Leonardo, the Balance — puts a counter on a creature
10. Spiritcall Enthusiast // Scrollboost — becomes prepared

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

a token is created — 3,711 cards in the game can cause this (Urza is one).

When Urza, Lord High Artificer makes a Construct token:

1. Akim, the Soaring Wind — makes a token
2. Idol of Oblivion — draws you 1 card
3. Rosie Cotton of South Lane — puts a counter on a permanent
4. Mirkwood Bats — makes each opponent lose 1 life

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

a Human enters the battlefield — 4,639 cards in the game can cause this (Urza is one).

When Urza, Lord High Artificer enters:

1. General Kudro of Drannith — hits a graveyard
2. Heronblade Elite — puts a +1/+1 counter on itself
3. Kyler, Sigardian Emissary — puts a +1/+1 counter on itself
4. Thalia's Lieutenant — puts a +1/+1 counter on itself
5. Champion of the Parish — puts a +1/+1 counter on itself
6. Captain of the Mists — untaps itself
7. Erkenbrand, Lord of Westfold — gives +1/+0
8. Beregond of the Guard — gives +1/+1
9. Théoden, King of Rohan — grants double strike
10. Lossarnach Captain — taps a creature an opponent controls

2 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 (Urza is one).

When a Construct enters thanks to Urza, Lord High Artificer:

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

58 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 (Urza is one).

When Urza, Lord High Artificer 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
7. Gossip's Talent — triggers

134 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 (Urza is one).

When Urza, Lord High Artificer attacks:

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

207 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 (Urza is one).

1. Tide of War — When Urza, Lord High Artificer blocks, Tide of War sacrifices a creature

29 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 (Urza is one).

1. Slash, Reptile Rampager — When a Construct enters thanks to Urza, Lord High Artificer, Slash, Reptile Rampager deals 2 damage
2. Gimli of the Glittering Caves — When Urza, Lord High Artificer enters, Gimli of the Glittering Caves puts counters on a permanent
3. Ray Fillet, Wave Warrior — When Urza, Lord High Artificer enters, Ray Fillet, Wave Warrior puts a counter on itself
4. Legolas Greenleaf — When Urza, Lord High Artificer enters, Legolas Greenleaf puts a counter on a permanent
5. The Neutrinos — When a Construct enters thanks to Urza, Lord High Artificer, The Neutrinos gets +1/+0
6. Wingnut, Bat on the Belfry — When a Construct enters thanks to Urza, Lord High Artificer, Wingnut, Bat on the Belfry grants flying, haste and menace
7. Aetherstorm Roc — When a Construct enters thanks to Urza, Lord High Artificer, Aetherstorm Roc puts a counter on a permanent you control
8. Raphael, Most Attitude — When a Construct enters thanks to Urza, Lord High Artificer, Raphael, Most Attitude exiles a card from your library

354 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 (Urza is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When a Construct enters thanks to Urza, Lord High Artificer, 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.