First Response

a Soldier creature enters the battlefield — 1,279 cards in the game can cause this (First Response is one).

1. Veteran's Armaments — When a Soldier enters thanks to First Response, Veteran's Armaments triggers

a creature token enters the battlefield — 2,799 cards in the game can cause this (First Response is one).

When a Soldier enters thanks to First Response:

1. Securitron Squadron — puts a counter on a permanent
2. Anointer Priest — gains you 1 life
3. Nesting Dovehawk — puts a +1/+1 counter on itself

a creature token is created — 2,799 cards in the game can cause this (First Response is one).

1. Staff of the Storyteller — When First Response makes a Soldier token, Staff of the Storyteller puts a story counter on itself

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

an enchantment is cast — 3,673 cards in the game can cause this (First Response is one).

When First Response is cast:

1. Hallowed Haunting — makes a token
2. Daxos the Returned — puts a counter on a permanent
3. Tatsunari, Toad Rider — makes a token
4. Sythis, Harvest's Hand — gains you 1 life
5. Sigil of the Empty Throne — makes a token
6. Dawnhart Geist — gains you 2 life
7. Herald of the Pantheon — gains you 1 life
8. Kami of Transience — puts a +1/+1 counter on itself
9. Argothian Enchantress — draws you 1 card
10. Mesa Enchantress — draws you 1 card

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

a nontoken enchantment enters the battlefield — 3,691 cards in the game can cause this (First Response is one).

1. Historian's Boon — When First Response enters, Historian's Boon makes a token

a token enters the battlefield — 3,710 cards in the game can cause this (First Response is one).

When a Soldier enters thanks to First Response:

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 (First Response is one).

When First Response makes a Soldier 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.

an enchantment enters the battlefield — 3,743 cards in the game can cause this (First Response is one).

When First Response enters:

1. Calix, Guided by Fate — puts a counter on a creature
2. Elvish Archivist — draws you 1 card
3. Victor, Valgavoth's Seneschal — surveils
4. Strength from the Fallen — gives +X/+X, where X is the number of creature cards in your graveyard
5. Doomwake Giant — shrinks a creature by -1/-1
6. Cacophony Unleashed — turns something into a creature
7. Ghostly Dancers — makes a token
8. Thassa's Devourer — mills a card
9. Killian, Decisive Mentor — taps a creature
10. Thoughtrender Lamia — makes an opponent discard a card

66 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 (First Response is one).

When a Soldier enters thanks to First Response:

1. Airbender Ascension — puts a quest counter on itself
2. Lunarch Veteran // Luminous Phantom — gains you 1 life
3. Pious Evangel // Wayward Disciple — gains you 1 life
4. Daxos, Blessed by the Sun — gains you 1 life
5. Elas il-Kor, Sadistic Pilgrim — gains you 1 life
6. Blasting Station — untaps itself
7. General Kreat, the Boltbringer — deals 1 damage
8. Mogg Bombers — sacrifices itself
9. Flame-Kin War Scout — sacrifices itself
10. Monkey Cage — sacrifices itself

342 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 (First Response is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When a Soldier enters thanks to First Response, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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