The Fourth Doctor

a land is played — 57 cards in The Fourth Doctor's colors can cause this (The Fourth Doctor is one).

When a land plays a land thanks to The Fourth Doctor:

1. The Endstone — draws you 1 card
2. Horn of Greed — makes a player draw 1 card
3. Pangosaur — triggers
4. City of Traitors — sacrifices itself

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

a spell is cast — 47 cards in The Fourth Doctor's colors can cause this (The Fourth Doctor is one).

1. Glaring Fleshraker — When a spell is cast thanks to The Fourth Doctor, Glaring Fleshraker makes a token
2. Etherium Spinner — When The Fourth Doctor is cast, Etherium Spinner makes a token
3. Mishra's Self-Replicator — When a spell is cast thanks to The Fourth Doctor, Mishra's Self-Replicator makes a token
4. Diamond Mare — When a spell is cast thanks to The Fourth Doctor, Diamond Mare gains you 1 life
5. Diamond Knight — When a spell is cast thanks to The Fourth Doctor, Diamond Knight puts a +1/+1 counter on itself
6. Rug of Smothering — When a spell is cast thanks to The Fourth Doctor, Rug of Smothering makes a player lose life
7. Traxos, Scourge of Kroog — When a spell is cast thanks to The Fourth Doctor, Traxos, Scourge of Kroog untaps itself
8. Drowner Initiate — When The Fourth Doctor is cast, Drowner Initiate mills a card
9. Diligent Excavator — When a spell is cast thanks to The Fourth Doctor, Diligent Excavator mills a card
10. Inventive Iteration // Living Breakthrough — When a spell is cast thanks to The Fourth Doctor, Inventive Iteration // Living Breakthrough triggers

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

a token enters the battlefield — 1,278 cards in The Fourth Doctor's colors can cause this (The Fourth Doctor is one).

When a Food enters thanks to The Fourth Doctor:

1. Mister Fantastic, Reed Richards — draws you 1 card
2. Cloakwood Swarmkeeper — puts a +1/+1 counter on itself
3. Woodland Champion — puts that many +1/+1 counters on itself
4. Wildwood Mentor — puts a +1/+1 counter on itself
5. Junk Winder — taps a creature, artifact, enchantment, planeswalker or battle an opponent controls

a token is created — 1,279 cards in The Fourth Doctor's colors can cause this (The Fourth Doctor is one).

1. Idol of Oblivion — When The Fourth Doctor makes a Food token, Idol of Oblivion draws you 1 card

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

an artifact enters the battlefield — 2,922 cards in The Fourth Doctor's colors can cause this (The Fourth Doctor is one).

When a Food enters thanks to The Fourth Doctor:

1. Transplant Theorist — draws you 1 card
2. Elvish Archivist — puts 2 +1/+1 counters on itself
3. Mechan Assembler — makes a token
4. Rook Turret — draws you 1 card
5. Skyswimmer Koi — draws you 1 card
6. Kappa Cannoneer — puts a +1/+1 counter on itself
7. Arcbound Crusher — puts a +1/+1 counter on itself
8. Sarinth Steelseeker — searches a library
9. Battered Golem — untaps itself
10. Grinding Station — untaps itself

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

a creature attacks — 6,391 cards in The Fourth Doctor's colors can cause this (The Fourth Doctor is one).

When The Fourth Doctor attacks:

1. Adaptive Omnitool — searches a library
2. Kindred Discovery — draws you 1 card
3. The Earth King — searches a library
4. Screaming Swarm — mills a card
5. Imperious Mindbreaker — mills a card
6. Staff of Titania — makes a token
7. Fractal Harness — puts counters on a permanent
8. Saw — sacrifices a creature
9. Ultima Weapon — kills a creature an opponent controls
10. Throwing Knife — sacrifices itself

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

anything attacks — 6,391 cards in The Fourth Doctor's colors can cause this (The Fourth Doctor is one).

When The Fourth Doctor attacks:

1. ED-E, Lonesome Eyebot — puts a quest counter on itself
2. Madame Web, Clairvoyant — mills a card
3. Bonny Pall, Clearcutter — draws you 1 card
4. Hazardroot Herbalist — gives +1/+0
5. Ranger Class — puts a counter on a creature
6. Campsite Cuisine — sacrifices a Food
7. Gossip's Talent — triggers
8. Toph, Earthbending Master — puts a counter on a permanent
9. Alora, Merry Thief — triggers
10. Twins of Discord — triggers

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

a creature blocks — 6,391 cards in The Fourth Doctor's colors can cause this (The Fourth Doctor is one).

When The Fourth Doctor blocks:

1. Barrow-Blade — strips abilities
2. Favor of the Woods — gains you 3 life
3. Gift of the Woods — gives +0/+3
4. Noxious Assault — puts a counter on a permanent
5. Ferocity — puts a counter on a permanent
6. Dead-Iron Sledge — kills a creature
7. Dwindle — kills a creature

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

a creature enters the battlefield — 7,050 cards in The Fourth Doctor's colors can cause this (The Fourth Doctor is one).

When The Fourth Doctor enters:

1. Season of Growth — scries
2. Ray Fillet, Wave Warrior — puts a counter on itself
3. Legolas Greenleaf — puts a counter on a permanent

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