Urza, Prince of Kroog

an Artificer enters the battlefield — 154 cards in Urza's colors can cause this (Urza is one).

1. Inventor's Goggles — When Urza, Prince of Kroog enters, Inventor's Goggles triggers

an Artificer creature it grants types to — 154 cards in Urza's colors can cause this.

1. Machinist's Arsenal — Machinist's Arsenal gives Urza, Prince of Kroog an extra creature type

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

a Soldier creature enters the battlefield — 818 cards in Urza's colors can cause this (Urza is one).

1. Veteran's Armaments — When a Soldier enters thanks to Urza, Prince of Kroog, Veteran's Armaments triggers

provide a creature to sacrifice — 996 cards in Urza's colors can cause this.

1. Jalira, Master Polymorphist — Urza, Prince of Kroog makes fodder for Jalira, Master Polymorphist
2. Polymorph — Urza, Prince of Kroog makes fodder for Polymorph
3. Proteus Staff — Urza, Prince of Kroog makes fodder for Proteus Staff
4. Synthetic Destiny — Urza, Prince of Kroog makes fodder for Synthetic Destiny
5. Mass Polymorph — Urza, Prince of Kroog makes fodder for Mass Polymorph

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

a creature token enters the battlefield — 1,033 cards in Urza's colors can cause this (Urza is one).

When a Soldier enters thanks to Urza, Prince of Kroog:

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 — 1,033 cards in Urza's colors can cause this (Urza is one).

1. Staff of the Storyteller — When Urza, Prince of Kroog makes a Soldier token, Staff of the Storyteller puts a story counter on itself

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

a token enters the battlefield — 1,315 cards in Urza's colors can cause this (Urza is one).

When a Soldier enters thanks to Urza, Prince of Kroog:

1. Belladonna Took — gains you 1 life
2. Lucy MacLean, Positively Armed — makes a token
3. Mister Fantastic, Reed Richards — draws you 1 card
4. Caretaker's Talent — draws you 1 card
5. Spiritcall Enthusiast // Scrollboost — becomes prepared
6. Junk Winder — taps a creature, artifact, enchantment, planeswalker or battle an opponent controls

a token is created — 1,316 cards in Urza's colors can cause this (Urza is one).

When Urza, Prince of Kroog makes a Soldier token:

1. Idol of Oblivion — draws you 1 card
2. Rosie Cotton of South Lane — puts a counter on a permanent

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

a Human enters the battlefield — 2,002 cards in Urza's colors can cause this (Urza is one).

When Urza, Prince of Kroog enters:

1. Thalia's Lieutenant — puts a +1/+1 counter on itself
2. Champion of the Parish — puts a +1/+1 counter on itself
3. Captain of the Mists — untaps itself
4. Beregond of the Guard — gives +1/+1
5. Lossarnach Captain — taps a creature an opponent controls

an artifact enters the battlefield — 3,114 cards in Urza's colors can cause this (Urza is one).

When a Soldier enters thanks to Urza, Prince of Kroog:

1. Transplant Theorist — draws you 1 card
2. Mechan Assembler — makes a token
3. Glassdust Hulk — gets +1/+1
4. Rook Turret — draws you 1 card
5. Mandible Justiciar — gets +1/+1
6. Skyswimmer Koi — draws you 1 card
7. Kappa Cannoneer — puts a +1/+1 counter on itself
8. Arcbound Crusher — puts a +1/+1 counter on itself
9. Battered Golem — untaps itself
10. Grinding Station — untaps itself

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

a creature attacks — 6,349 cards in Urza's colors can cause this (Urza is one).

When Urza, Prince of Kroog attacks:

1. Adaptive Omnitool — searches a library
2. Kindred Discovery — draws you 1 card
3. Screaming Swarm — mills a card
4. Imperious Mindbreaker — mills a card
5. Staff of Titania — makes a token
6. Glory Bearers — gives +0/+1
7. Saw — sacrifices a creature
8. Ultima Weapon — kills a creature an opponent controls
9. Super-Soldier Serum — triggers
10. Throwing Knife — sacrifices itself

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

anything attacks — 6,349 cards in Urza's colors can cause this (Urza is one).

When Urza, Prince of Kroog attacks:

1. ED-E, Lonesome Eyebot — puts a quest counter on itself
2. Surgical Suite // Hospital Room — puts a counter on a creature
3. Madame Web, Clairvoyant — mills a card
4. Apothecary White — makes a token
5. Adeline, Resplendent Cathar — makes a token
6. Dalkovan Encampment — makes 2 tokens
7. Salvation Colossus — gives +2/+2
8. Guide of Souls — triggers
9. Gossip's Talent — triggers
10. Warren Warleader — triggers

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

a creature blocks — 6,349 cards in Urza's colors can cause this (Urza is one).

When Urza, Prince of Kroog blocks:

1. Barrow-Blade — strips abilities
2. Noble Stand — gains you 2 life
3. Battle Cry — gives +0/+1
4. Dead-Iron Sledge — kills a creature
5. Dwindle — kills a creature
6. Shield of the Righteous — triggers

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

a nontoken creature attacks — 6,349 cards in Urza's colors can cause this (Urza is one).

When Urza, Prince of Kroog attacks:

1. Basri Ket — makes a token
2. Militia's Pride — makes a token

a creature enters the battlefield — 7,093 cards in Urza's colors can cause this (Urza is one).

1. Ray Fillet, Wave Warrior — When Urza, Prince of Kroog enters, Ray Fillet, Wave Warrior puts a counter on itself
2. Aetherstorm Roc — When a Soldier enters thanks to Urza, Prince of Kroog, Aetherstorm Roc puts a counter on a permanent you control

1,210 other cards care about it too. These are the ones with the most connections.

anything enters the battlefield — 10,721 cards in Urza's colors can cause this (Urza is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When a Soldier enters thanks to Urza, Prince of Kroog, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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