The Fifth Doctor

a creature untaps — 248 cards in The Fifth Doctor's colors can cause this (The Fifth Doctor is one).

1. Fishing Pole — When The Fifth Doctor untaps, Fishing Pole triggers

a creature gets a counter — 830 cards in The Fifth Doctor's colors can cause this (The Fifth Doctor is one).

When a creature gets a counter thanks to The Fifth Doctor:

1. Danny Pink — draws you 1 card
2. Omarthis, Ghostfire Initiate — puts a counter on a permanent
3. Rikku, Resourceful Guardian — triggers

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

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

When The Fifth Doctor 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

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

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

When The Fifth Doctor 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

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

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

When The Fifth Doctor 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

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

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

When The Fifth Doctor attacks:

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

a creature deals combat damage — 6,349 cards in The Fifth Doctor's colors can cause this (The Fifth Doctor is one).

1. Antagonist Incorporator — When The Fifth Doctor deals combat damage, Antagonist Incorporator makes a token

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

a creature is cast — 6,370 cards in The Fifth Doctor's colors can cause this (The Fifth Doctor is one).

When The Fifth Doctor is cast:

1. God-Eternal Oketra — makes a token
2. Oketra's Monument — makes a token
3. Kozilek's Unsealing — makes 2 tokens
4. The Clone Saga — copies a spell
5. Quest for the Holy Relic — puts a quest counter on itself
6. Oltec Matterweaver — triggers
7. Pure Reflection — kills a Reflection
8. Flickering Hound — flickers a creature you control
9. Hazoret's Monument — draws and discards
10. Aether Barrier — makes a player sacrifice a permanent

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

a nontoken creature enters the battlefield — 6,535 cards in The Fifth Doctor's colors can cause this (The Fifth Doctor is one).

When The Fifth Doctor enters:

1. Angelic Sell-Sword — makes a token
2. Arni, Humble Scribe — untaps itself
3. Saradoc, Master of Buckland — makes a token
4. Spirit Bonds — makes a token
5. Metastatic Evangel — proliferates
6. Minion Reflector — makes a token
7. Blessed Sanctuary — makes a token
8. Radiant Solar — triggers
9. Anafenza, Kin-Tree Spirit — puts a counter on a permanent
10. Overburden — triggers

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

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

When The Fifth Doctor enters:

1. Ray Fillet, Wave Warrior — puts a counter on itself
2. Pollywog Prodigy — puts a counter on itself
3. Lunarch Veteran // Luminous Phantom — gains you 1 life
4. Daxos, Blessed by the Sun — gains you 1 life
5. Loran, Disciple of History — brings a card back
6. Aetherstorm Roc — puts a counter on a permanent you control

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

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

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When The Fifth Doctor enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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