Epistolary Librarian

a spell is cast — 155 cards in the game can cause this (Epistolary Librarian is one).

When a spell is cast thanks to Epistolary Librarian:

1. Glaring Fleshraker — makes a token
2. The Kingpin of Crime — drains each opponent
3. Leader's Talent — puts a counter on a creature
4. Nita, Forum Conciliator — puts a counter on a creature
5. Treasury Thrull — drains each opponent
6. Life Insurance — drains each opponent
7. Sorin of House Markov // Sorin, Ravenous Neonate — drains each opponent
8. Syndicate Heavy — drains each opponent
9. Norin the Wary — flickers itself
10. Desecration Elemental — makes a player sacrifice a creature

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

a nontoken Wizard enters the battlefield — 1,243 cards in the game can cause this (Epistolary Librarian is one).

1. Inalla, Archmage Ritualist — When Epistolary Librarian enters, Inalla, Archmage Ritualist makes a token

a Wizard creature enters the battlefield — 1,264 cards in the game can cause this (Epistolary Librarian is one).

1. Diviner's Wand — When Epistolary Librarian enters, Diviner's Wand triggers

anything attacks — 17,934 cards in the game can cause this (Epistolary Librarian is one).

When Epistolary Librarian 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 (Epistolary Librarian is one).

When Epistolary Librarian 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

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 (Epistolary Librarian is one).

When Epistolary Librarian blocks:

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

23 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 (Epistolary Librarian is one).

1. Mardu Ascendancy — When Epistolary Librarian attacks, Mardu Ascendancy makes a token

2 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 (Epistolary Librarian is one).

When Epistolary Librarian enters:

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

321 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 (Epistolary Librarian is one).

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

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