Namor the Sub-Mariner

a Villain enters the battlefield — 55 cards in Namor the Sub-Mariner's colors can cause this (Namor the Sub-Mariner is one).

1. Flying Octobot — When Namor the Sub-Mariner enters, Flying Octobot puts a +1/+1 counter on itself

a Mutant enters the battlefield — 55 cards in Namor the Sub-Mariner's colors can cause this (Namor the Sub-Mariner is one).

1. April O'Neil, Live on the Scene — When Namor the Sub-Mariner enters, April O'Neil, Live on the Scene triggers

a Merfolk deals combat damage — 239 cards in Namor the Sub-Mariner's colors can cause this (Namor the Sub-Mariner is one).

1. Seafloor Oracle — When Namor the Sub-Mariner deals combat damage, Seafloor Oracle draws you 1 card

a Merfolk enters the battlefield — 247 cards in Namor the Sub-Mariner's colors can cause this (Namor the Sub-Mariner is one).

1. River Sneak — When a Merfolk enters thanks to Namor the Sub-Mariner, River Sneak gets +1/+1

a Merfolk you control — 245 cards in Namor the Sub-Mariner's colors can cause this.

1. Umara Wizard // Umara Skyfalls — While you control Umara Wizard // Umara Skyfalls, Namor the Sub-Mariner counts it and gets bigger
2. Umara Entangler — While you control Umara Entangler, Namor the Sub-Mariner counts it and gets bigger
3. Sahagin — While you control Sahagin, Namor the Sub-Mariner counts it and gets bigger
4. Shipwreck Dowser — While you control Shipwreck Dowser, Namor the Sub-Mariner counts it and gets bigger
5. Merfolk Windrobber — While you control Merfolk Windrobber, Namor the Sub-Mariner counts it and gets bigger
6. Barkform Harvester — While you control Barkform Harvester, Namor the Sub-Mariner counts it and gets bigger
7. Talrand, Sky Summoner — While you control Talrand, Sky Summoner, Namor the Sub-Mariner counts it and gets bigger

238 other cards use it too. These are the ones with the most connections.

provide a creature to sacrifice — 424 cards in Namor the Sub-Mariner's colors can cause this.

1. Jalira, Master Polymorphist — Namor the Sub-Mariner makes fodder for Jalira, Master Polymorphist
2. Polymorph — Namor the Sub-Mariner makes fodder for Polymorph
3. Proteus Staff — Namor the Sub-Mariner makes fodder for Proteus Staff
4. Synthetic Destiny — Namor the Sub-Mariner makes fodder for Synthetic Destiny
5. Mass Polymorph — Namor the Sub-Mariner makes fodder for Mass Polymorph

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

a token enters the battlefield — 614 cards in Namor the Sub-Mariner's colors can cause this (Namor the Sub-Mariner is one).

When a Merfolk enters thanks to Namor the Sub-Mariner:

1. Mister Fantastic, Reed Richards — draws you 1 card
2. Junk Winder — taps a creature, artifact, enchantment, planeswalker or battle an opponent controls

a token is created — 615 cards in Namor the Sub-Mariner's colors can cause this (Namor the Sub-Mariner is one).

1. Idol of Oblivion — When Namor the Sub-Mariner makes a Merfolk token, Idol of Oblivion draws you 1 card

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

a creature attacks — 3,238 cards in Namor the Sub-Mariner's colors can cause this (Namor the Sub-Mariner is one).

When Namor the Sub-Mariner attacks:

1. Adaptive Omnitool — searches a library
2. Kindred Discovery — draws you 1 card
3. Teo, Spirited Glider — draws you 1 card
4. Shadow Puppeteers — turns something into a creature
5. Screaming Swarm — mills a card
6. Imperious Mindbreaker — mills a card
7. Staff of Titania — makes a token
8. Saw — sacrifices a creature
9. Ultima Weapon — kills a creature an opponent controls
10. Throwing Knife — sacrifices itself

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

anything attacks — 3,238 cards in Namor the Sub-Mariner's colors can cause this (Namor the Sub-Mariner is one).

When Namor the Sub-Mariner attacks:

1. ED-E, Lonesome Eyebot — puts a quest counter on itself
2. Madame Web, Clairvoyant — mills a card
3. Dawnsire, Sunstar Dreadnought — deals 100 damage
4. Curse of Verbosity — draws you 1 card
5. Gossip's Talent — triggers
6. Alora, Merry Thief — triggers
7. Twins of Discord — triggers
8. Great Gilded Boat — draws and discards
9. Cosmic Cube — triggers
10. Doom's Time Platform — exiles a card from your graveyard

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

a creature blocks — 3,238 cards in Namor the Sub-Mariner's colors can cause this (Namor the Sub-Mariner is one).

When Namor the Sub-Mariner blocks:

1. Barrow-Blade — strips abilities
2. Dead-Iron Sledge — kills a creature
3. Dwindle — kills a creature

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

a creature is cast — 3,254 cards in Namor the Sub-Mariner's colors can cause this (Namor the Sub-Mariner is one).

When Namor the Sub-Mariner is cast:

1. Oketra's Monument — makes a token
2. The Clone Saga — copies a spell
3. Customs Depot — draws you 1 card
4. Bontu's Monument — makes each opponent lose 1 life
5. Vanquisher's Banner — draws you 1 card
6. Rhonas's Monument — gives +2/+2
7. Hazoret's Monument — draws and discards
8. Aether Barrier — makes a player sacrifice a permanent
9. Kefnet's Monument — triggers
10. Equilibrium — triggers

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

a nontoken creature enters the battlefield — 3,316 cards in Namor the Sub-Mariner's colors can cause this (Namor the Sub-Mariner is one).

When Namor the Sub-Mariner enters:

1. Arni, Humble Scribe — untaps itself
2. Minion Reflector — makes a token
3. Overburden — triggers

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

a creature enters the battlefield — 3,581 cards in Namor the Sub-Mariner's colors can cause this (Namor the Sub-Mariner is one).

1. Ray Fillet, Wave Warrior — When Namor the Sub-Mariner enters, Ray Fillet, Wave Warrior puts a counter on itself
2. Pollywog Prodigy — When Namor the Sub-Mariner enters, Pollywog Prodigy puts a counter on itself
3. Blasting Station — When a Merfolk enters thanks to Namor the Sub-Mariner, Blasting Station untaps itself
4. Sage of the Falls — When a Merfolk enters thanks to Namor the Sub-Mariner, Sage of the Falls draws you 1 card
5. Bloodline Pretender — When a Merfolk enters thanks to Namor the Sub-Mariner, Bloodline Pretender puts a +1/+1 counter on itself
6. Sage's Row Denizen — When a Merfolk enters thanks to Namor the Sub-Mariner, Sage's Row Denizen mills a card
7. Soultether Golem — When a Merfolk enters thanks to Namor the Sub-Mariner, Soultether Golem puts a time counter on itself
8. Simic Fluxmage — When Namor the Sub-Mariner enters, Simic Fluxmage puts a counter on itself
9. Simic Manipulator — When Namor the Sub-Mariner enters, Simic Manipulator puts a counter on itself
10. Monkey Cage — When a Merfolk enters thanks to Namor the Sub-Mariner, Monkey Cage sacrifices itself

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