Vren, the Relentless

a Rat attacks — 162 cards in the game can cause this (Vren is one).

1. Persistent Marshstalker — When Vren, the Relentless attacks, Persistent Marshstalker returns itself from the graveyard

a Rat enters the battlefield — 186 cards in the game can cause this (Vren is one).

When a Rat enters thanks to Vren, the Relentless:

1. Wick, the Whorled Mind — makes a token
2. Lord Skitter, Sewer King — hits a graveyard

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

a Rogue attacks — 636 cards in the game can cause this (Vren is one).

1. Soaring Thought-Thief — When Vren, the Relentless attacks, Soaring Thought-Thief mills a card

a Rogue deals combat damage — 636 cards in the game can cause this (Vren is one).

1. Anowon, the Ruin Thief — When Vren, the Relentless deals combat damage, Anowon, the Ruin Thief mills a card

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

a Rogue creature enters the battlefield — 657 cards in the game can cause this (Vren is one).

1. Cloak and Dagger — When Vren, the Relentless enters, Cloak and Dagger triggers

a Rogue enters the battlefield — 659 cards in the game can cause this (Vren is one).

1. Thieves' Guild Enforcer — When Vren, the Relentless enters, Thieves' Guild Enforcer mills a card

a creature is exiled — 1,003 cards in the game can cause this (Vren is one).

When a creature is exiled thanks to Vren, the Relentless:

1. Ashnod's Intervention — brings a card back
2. Soulherder — puts a +1/+1 counter on itself

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

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

1. The War Doctor — When a creature is exiled thanks to Vren, the Relentless, The War Doctor puts a time counter on itself

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

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

1. Jalira, Master Polymorphist — Vren, the Relentless makes fodder for Jalira, Master Polymorphist
2. Polymorph — Vren, the Relentless makes fodder for Polymorph
3. Proteus Staff — Vren, the Relentless makes fodder for Proteus Staff
4. Synthetic Destiny — Vren, the Relentless makes fodder for Synthetic Destiny
5. Mass Polymorph — Vren, the Relentless 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 (Vren is one).

When a Rat enters thanks to Vren, the Relentless:

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 (Vren is one).

1. Staff of the Storyteller — When Vren, the Relentless makes a Rat 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 (Vren is one).

When a Rat enters thanks to Vren, the Relentless:

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 (Vren is one).

When Vren, the Relentless makes a Rat 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 nontoken creature leaves the battlefield — 4,133 cards in the game can cause this (Vren is one).

1. Dual Nature — When a creature leaves the battlefield thanks to Vren, the Relentless, Dual Nature exiles a creature

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

a creature leaves the battlefield — 4,238 cards in the game can cause this (Vren is one).

When a creature leaves the battlefield thanks to Vren, the Relentless:

1. Extractor Demon — mills a card
2. Valor of the Worthy — makes a token
3. Traveling Plague — returns itself from the graveyard
4. Funeral March — makes a player sacrifice a creature

27 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 (Vren is one).

When Vren, the Relentless attacks:

1. Shaun, Father of Synths — makes a token
2. Far Fortune, End Boss — deals 1 damage
3. Temmet, Naktamun's Will — draws you 1 card
4. Grim Javelineer — gives +1/+0
5. Invisible Woman — triggers
6. Caesar, Legion's Emperor — sacrifices a creature
7. Guide of Souls — triggers
8. Campsite Cuisine — sacrifices a Food
9. Gossip's Talent — triggers
10. Banon, the Returners' Leader — draws and discards

127 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 (Vren is one).

When Vren, the Relentless attacks:

1. Adaptive Omnitool — searches a library
2. Anthem of Rakdos — gives +2/+0
3. Kindred Discovery — draws you 1 card
4. Saw — sacrifices a creature

201 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 (Vren is one).

1. Tide of War — When Vren, the Relentless blocks, Tide of War sacrifices a creature

29 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 (Vren is one).

When Vren, the Relentless is cast:

1. God-Eternal Oketra — makes a token
2. Champions of the Perfect — draws you 1 card

89 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 (Vren is one).

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

340 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 (Vren is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When a Rat enters thanks to Vren, the Relentless, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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