Undercover Operative

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

1. Soaring Thought-Thief — When Undercover Operative attacks, Soaring Thought-Thief mills a card

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

1. Anowon, the Ruin Thief — When Undercover Operative 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 (Undercover Operative is one).

1. Cloak and Dagger — When Undercover Operative enters, Cloak and Dagger triggers

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

1. Thieves' Guild Enforcer — When Undercover Operative enters, Thieves' Guild Enforcer mills a card

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

1. All Will Be One — When a permanent gets a counter thanks to Undercover Operative, All Will Be One deals that much damage

8 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 (Undercover Operative is one).

When Undercover Operative attacks:

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

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 (Undercover Operative is one).

When Undercover Operative 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. Anim Pakal, Thousandth Moon — puts a +1/+1 counter on itself
7. Saw — sacrifices a creature
8. Gisa's Favorite Shovel — makes an opponent sacrifice a creature
9. Ultima Weapon — kills a creature an opponent controls
10. Total War — kills a creature

181 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 (Undercover Operative is one).

When Undercover Operative blocks:

1. Mage Hunters' Onslaught — makes a player lose 1 life
2. Carnage Gladiator — makes a player lose 1 life
3. Barrow-Blade — strips abilities
4. Heat of Battle — deals 1 damage
5. Battle Strain — deals 1 damage
6. Favor of the Woods — gains you 3 life
7. Tide of War — sacrifices a creature
8. Dead-Iron Sledge — kills a creature
9. Dwindle — kills a creature
10. Shield of the Righteous — triggers

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

a creature deals combat damage — 17,934 cards in the game can cause this (Undercover Operative is one).

When Undercover Operative deals combat damage:

1. Primo, the Unbounded — makes a token
2. Locutus of Borg — makes a token

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

a nontoken creature attacks — 17,934 cards in the game can cause this (Undercover Operative is one).

When Undercover Operative attacks:

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

a creature enters the battlefield — 19,800 cards in the game can cause this (Undercover Operative is one).

1. Fire Nation Salvagers — When Fire Nation Salvagers enters because Undercover Operative copies it, its ability triggers again
2. Goblin Goliath — When Goblin Goliath enters because Undercover Operative copies it, its ability triggers again
3. Slash, Reptile Rampager — When Undercover Operative enters, Slash, Reptile Rampager deals 2 damage
4. The Neutrinos — When Undercover Operative enters, The Neutrinos gets +1/+0
5. Wingnut, Bat on the Belfry — When Undercover Operative enters, Wingnut, Bat on the Belfry grants flying, haste and menace
6. Shadow Puppeteers — When Shadow Puppeteers enters because Undercover Operative copies it, its ability triggers again
7. Tenured Inkcaster — When Tenured Inkcaster enters because Undercover Operative copies it, its ability triggers again
8. Aetherstorm Roc — When Aetherstorm Roc enters because Undercover Operative copies it, its ability triggers again
9. Raphael, Most Attitude — When Undercover Operative enters, Raphael, Most Attitude exiles a card from your library
10. Clandestine Meddler — When Clandestine Meddler enters because Undercover Operative copies it, its ability triggers again

305 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 (Undercover Operative is one).

1. Caradora, Heart of Alacria — When Caradora, Heart of Alacria enters because Undercover Operative copies it, its ability triggers again
2. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Undercover Operative enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself
3. Ivora, Insatiable Heir — When Ivora, Insatiable Heir enters because Undercover Operative copies it, its ability triggers again
4. Dogmeat, Ever Loyal — When Dogmeat, Ever Loyal enters because Undercover Operative copies it, its ability triggers again
5. The Earth King — When The Earth King enters because Undercover Operative copies it, its ability triggers again
6. SP//dr, Piloted by Peni — When SP//dr, Piloted by Peni enters because Undercover Operative copies it, its ability triggers again
7. Mu Yanling, Wind Rider — When Mu Yanling, Wind Rider enters because Undercover Operative copies it, its ability triggers again
8. The Rani — When The Rani enters because Undercover Operative copies it, its ability triggers again
9. J. Jonah Jameson — When J. Jonah Jameson enters because Undercover Operative copies it, its ability triggers again
10. Ultimecia, Temporal Threat — When Ultimecia, Temporal Threat enters because Undercover Operative copies it, its ability triggers again

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