Protocol Knight

a Knight attacks — 547 cards in the game can cause this (Protocol Knight is one).

1. Knights' Charge — When Protocol Knight attacks, Knights' Charge makes each opponent lose 1 life

a Knight deals combat damage — 547 cards in the game can cause this (Protocol Knight is one).

1. Exsanguinator Cavalry — When Protocol Knight deals combat damage, Exsanguinator Cavalry puts a counter on a permanent

a creature becomes tapped — 565 cards in the game can cause this (Protocol Knight is one).

When a creature becomes tapped thanks to Protocol Knight:

1. Stinging Licid — deals 2 damage
2. Gideon's Avenger — puts a +1/+1 counter on itself
3. Lust for War — deals 3 damage
4. Insolence — deals 2 damage
5. Seizures — deals 3 damage
6. Betrayal — draws you 1 card
7. Spirit Shackle — puts a counter on a permanent
8. Palliation Accord — puts a palliation counter on itself
9. Cryoshatter — kills a creature
10. Don't Move — kills a creature

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

a Knight enters the battlefield — 592 cards in the game can cause this (Protocol Knight is one).

When Protocol Knight enters:

1. Brimstone Trebuchet — untaps itself
2. Zhalfirin Lancer — gets +1/+1

a creature gets a counter — 2,691 cards in the game can cause this (Protocol Knight is one).

When a creature gets a counter thanks to Protocol Knight:

1. Generous Patron — draws you 1 card
2. Bold Plagiarist — puts counters on a permanent
3. Kros, Defense Contractor — triggers
4. Rikku, Resourceful Guardian — triggers

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

anything gets a counter — 4,415 cards in the game can cause this (Protocol Knight is one).

1. All Will Be One — When a creature gets a counter thanks to Protocol Knight, All Will Be One deals that much damage

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

a Human enters the battlefield — 4,639 cards in the game can cause this (Protocol Knight is one).

When Protocol Knight enters:

1. General Kudro of Drannith — hits a graveyard
2. Heronblade Elite — puts a +1/+1 counter on itself
3. Kyler, Sigardian Emissary — puts a +1/+1 counter on itself
4. Thalia's Lieutenant — puts a +1/+1 counter on itself
5. Champion of the Parish — puts a +1/+1 counter on itself
6. Captain of the Mists — untaps itself
7. Erkenbrand, Lord of Westfold — gives +1/+0
8. Beregond of the Guard — gives +1/+1
9. Théoden, King of Rohan — grants double strike
10. Lossarnach Captain — taps a creature an opponent controls

2 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 (Protocol Knight is one).

When Protocol Knight attacks:

1. Hollowmurk Siege — puts a counter on a creature
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

113 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 (Protocol Knight is one).

When Protocol Knight attacks:

1. Adaptive Omnitool — searches a library
2. Anthem of Rakdos — gives +2/+0
3. Kindred Discovery — draws you 1 card
4. Invasion of New Capenna // Holy Frazzle-Cannon — puts counters on a permanent
5. Chorale of the Void — brings a card back
6. Saw — sacrifices a creature
7. Gisa's Favorite Shovel — makes an opponent sacrifice a creature
8. Ultima Weapon — kills a creature an opponent controls

185 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 (Protocol Knight is one).

When Protocol Knight blocks:

1. Mage Hunters' Onslaught — makes a player lose 1 life
2. Tide of War — sacrifices a creature
3. Dead-Iron Sledge — kills a creature

25 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 (Protocol Knight is one).

When Protocol Knight enters:

1. Scurry Oak — puts a counter on itself
2. Fathom Mage — puts a counter on itself
3. Lonis, Genetics Expert — puts a counter on itself
4. Slash, Reptile Rampager — deals 2 damage
5. Ray Fillet, Wave Warrior — puts a counter on itself
6. The Neutrinos — gets +1/+0
7. Wingnut, Bat on the Belfry — grants flying, haste and menace
8. Aetherstorm Roc — puts a counter on a permanent you control
9. Raphael, Most Attitude — exiles a card from your library

301 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 (Protocol Knight is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Protocol Knight enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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