April O'Neil, Live on the Scene

a Detective enters the battlefield — 148 cards in the game can cause this (April O'Neil is one).

When April O'Neil, Live on the Scene enters:

1. Case of the Pilfered Proof — puts a counter on a permanent
2. Projektor Inspector — draws you 1 card
3. Perimeter Enforcer — gets +1/+1

put a Turtle onto the battlefield — 148 cards in the game can cause this.

1. Bloodline Pretender — When Bloodline Pretender enters, April O'Neil, Live on the Scene triggers
2. Barkform Harvester — When Barkform Harvester enters, April O'Neil, Live on the Scene triggers
3. Donatello, Way with Machines — When Donatello, Way with Machines enters, April O'Neil, Live on the Scene triggers
4. Donatello, the Brains — When Donatello, the Brains enters, April O'Neil, Live on the Scene triggers
5. Donnie & April, Adorkable Duo — When Donnie & April, Adorkable Duo enters, April O'Neil, Live on the Scene triggers
6. Three Tree Mascot — When Three Tree Mascot enters, April O'Neil, Live on the Scene triggers
7. Universal Automaton — When Universal Automaton enters, April O'Neil, Live on the Scene triggers
8. Rooftop Percher — When Rooftop Percher enters, April O'Neil, Live on the Scene triggers
9. Orvar, the All-Form — When Orvar, the All-Form enters, April O'Neil, Live on the Scene triggers
10. Littjara Kinseekers — When Littjara Kinseekers enters, April O'Neil, Live on the Scene triggers

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

put a Mutant onto the battlefield — 286 cards in the game can cause this.

1. Simic Manipulator — When Simic Manipulator enters, April O'Neil, Live on the Scene triggers
2. Cloudfin Raptor — When Cloudfin Raptor enters, April O'Neil, Live on the Scene triggers
3. Madame Web, Clairvoyant — When Madame Web, Clairvoyant enters, April O'Neil, Live on the Scene triggers
4. Wiccan, Rising Magician — When Wiccan, Rising Magician enters, April O'Neil, Live on the Scene triggers
5. Jason Bright, Glowing Prophet — When Jason Bright, Glowing Prophet enters, April O'Neil, Live on the Scene triggers
6. Baxter, Fly in the Ointment — When Baxter, Fly in the Ointment enters, April O'Neil, Live on the Scene triggers
7. Namor the Sub-Mariner — When Namor the Sub-Mariner enters, April O'Neil, Live on the Scene triggers
8. Benthic Biomancer — When Benthic Biomancer enters, April O'Neil, Live on the Scene triggers
9. Namora, the Sea Queen — When Namora, the Sea Queen enters, April O'Neil, Live on the Scene triggers
10. Stockman, Mad Fly-entist — When Stockman, Mad Fly-entist enters, April O'Neil, Live on the Scene triggers

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

a token enters the battlefield — 3,710 cards in the game can cause this (April O'Neil is one).

When a Clue enters thanks to April O'Neil, Live on the Scene:

1. Baron Bertram Graywater — makes a token
2. Marneus Calgar — draws you 1 card
3. Belladonna Took — gains you 1 life
4. Kambal, Profiteering Mayor — makes each opponent lose 1 life
5. Lucy MacLean, Positively Armed — makes a token
6. Mister Fantastic, Reed Richards — draws you 1 card
7. Cloakwood Swarmkeeper — puts a +1/+1 counter on itself
8. Woodland Champion — puts that many +1/+1 counters on itself
9. Leonardo, the Balance — puts a counter on a creature
10. Spiritcall Enthusiast // Scrollboost — becomes prepared

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

a token is created — 3,711 cards in the game can cause this (April O'Neil is one).

When April O'Neil, Live on the Scene makes a Clue token:

1. Akim, the Soaring Wind — makes a token
2. Idol of Oblivion — draws you 1 card
3. Rosie Cotton of South Lane — puts a counter on a permanent
4. Mirkwood Bats — makes each opponent lose 1 life

17 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 (April O'Neil is one).

When April O'Neil, Live on the Scene 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.

an artifact enters the battlefield — 4,643 cards in the game can cause this (April O'Neil is one).

When a Clue enters thanks to April O'Neil, Live on the Scene:

1. Transplant Theorist — draws you 1 card
2. Elvish Archivist — puts 2 +1/+1 counters on itself
3. Golbez, Crystal Collector — surveils
4. Sludge Strider — makes a player lose 1 life
5. Underhanded Designs — makes each opponent lose 1 life
6. Mechan Assembler — makes a token
7. Glassdust Hulk — gets +1/+1
8. Rook Turret — draws you 1 card
9. Hedron Detonator — deals 1 damage
10. Pactdoll Terror — makes each opponent lose 1 life

56 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 (April O'Neil is one).

When April O'Neil, Live on the Scene 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

121 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 (April O'Neil is one).

When April O'Neil, Live on the Scene attacks:

1. Adaptive Omnitool — searches a library
2. Anthem of Rakdos — gives +2/+0
3. Kindred Discovery — draws you 1 card
4. Saw — sacrifices a creature

192 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 (April O'Neil is one).

1. Tide of War — When April O'Neil, Live on the Scene blocks, Tide of War sacrifices a creature

27 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 (April O'Neil is one).

When April O'Neil, Live on the Scene enters:

1. Slash, Reptile Rampager — deals 2 damage
2. Gimli of the Glittering Caves — puts counters on a permanent
3. Ray Fillet, Wave Warrior — puts a counter on itself
4. Legolas Greenleaf — puts a counter on a permanent
5. The Neutrinos — gets +1/+0
6. Wingnut, Bat on the Belfry — grants flying, haste and menace
7. Aetherstorm Roc — puts a counter on a permanent you control
8. Raphael, Most Attitude — exiles a card from your library

323 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 (April O'Neil is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When April O'Neil, Live on the Scene enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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