Manglehorn

a Beast creature is cast — 587 cards in the game can cause this (Manglehorn is one).

1. Tawnos, the Toymaker — When Manglehorn is cast, Tawnos, the Toymaker copies a spell

a Beast enters the battlefield — 632 cards in the game can cause this (Manglehorn is one).

When Manglehorn enters:

1. Totem Speaker — gains you 3 life
2. Wirewood Savage — draws you 1 card
3. Woodland Liege — draws you 1 card
4. Aether Charge — deals 4 damage

an artifact in a graveyard — 1,226 cards in the game can cause this (Manglehorn is one).

Manglehorn puts cards into the graveyard that:

1. Bilbo, Unexpected Adventurer — can bring back
2. Narset, Enlightened Exile — can bring back
3. Fallaji Archaeologist — can bring back
4. T'Chaka, Venerable King — can bring back
5. Goblin Welder — can bring back
6. Saprazzan Bailiff — can bring back
7. Tomakul Scrapsmith — can bring back
8. Anrakyr the Traveller — can bring back
9. Chandra, Chill of Compliance — can bring back
10. Open the Vaults — can bring back

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

an artifact is put into a graveyard from the battlefield — 1,254 cards in the game can cause this (Manglehorn is one).

When an artifact is put into a graveyard from the battlefield thanks to Manglehorn:

1. Party Dude — draws you 1 card
2. Tezzeret's Touch — brings a card back
3. Krenko, Baron of Tin Street — makes a token
4. Shard of the Void Dragon — puts 2 +1/+1 counters on itself
5. Kibo, Uktabi Prince — puts a counter on an Ape or Monkey
6. Ich-Tekik, Salvage Splicer — puts a +1/+1 counter on itself
7. Gremlin Infestation — makes a token
8. Summoning Station — untaps itself
9. Pain Distributor — deals 1 damage
10. Fangren Marauder — gains you 5 life

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

a card in a graveyard — 7,589 cards in the game can cause this (Manglehorn is one).

1. Heart-Shaped Herb — Manglehorn puts cards into the graveyard that Heart-Shaped Herb can bring back
2. Enlightened Confidant — Manglehorn puts cards into the graveyard that Enlightened Confidant can bring back
3. Tergrid, God of Fright // Tergrid's Lantern — Manglehorn puts cards into the graveyard that Tergrid, God of Fright // Tergrid's Lantern can bring back
4. Grazing Kelpie — Manglehorn puts cards into the graveyard that Grazing Kelpie can bring back
5. Dauthi Voidwalker — Cards Manglehorn would put into an opponent's graveyard are exiled by Dauthi Voidwalker instead, and it can play from among them
6. Endurance — Manglehorn puts cards into the graveyard that Endurance can bring back
7. Thieves' Guild Enforcer — Manglehorn fills an opponent's graveyard toward the 8 or more cards Thieves' Guild Enforcer needs
8. Soaring Thought-Thief — Manglehorn fills an opponent's graveyard toward the 8 or more cards Soaring Thought-Thief needs
9. Athreos, Shroud-Veiled — Manglehorn puts cards into the graveyard that Athreos, Shroud-Veiled can bring back
10. Merfolk Windrobber — Manglehorn fills an opponent's graveyard toward the 8 or more cards Merfolk Windrobber needs

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

anything goes to a graveyard — 7,589 cards in the game can cause this (Manglehorn is one).

When an artifact hits the graveyard thanks to Manglehorn:

1. The Haunt of Hightower — puts a +1/+1 counter on itself
2. Duskmantle Guildmage — makes each opponent lose 1 life
3. Vulturous Zombie — puts a +1/+1 counter on itself
4. Bloodchief Ascension — makes each opponent lose 2 life
5. Planar Void — hits a graveyard

6 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 (Manglehorn is one).

When Manglehorn attacks:

1. Shaun, Father of Synths — makes a token
2. Far Fortune, End Boss — deals 1 damage
3. Temmet, Naktamun's Will — draws you 1 card
4. Optimus Prime, Hero // Optimus Prime, Autobot Leader — puts a counter on a permanent
5. Invisible Woman — triggers
6. Caesar, Legion's Emperor — sacrifices a creature
7. Guide of Souls — triggers

132 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 (Manglehorn is one).

When Manglehorn attacks:

1. Adaptive Omnitool — searches a library
2. Saw — sacrifices a creature

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

a creature is cast — 18,010 cards in the game can cause this (Manglehorn is one).

When Manglehorn is cast:

1. God-Eternal Oketra — makes a token
2. Bloodbond March — brings a card back

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

a nontoken creature enters the battlefield — 18,448 cards in the game can cause this (Manglehorn is one).

1. Samwise Gamgee — When Manglehorn enters, Samwise Gamgee makes a token

32 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 (Manglehorn is one).

When Manglehorn enters:

1. Enduring Innocence — draws you 1 card
2. Enduring Courage — gives +2/+0
3. Slash, Reptile Rampager — deals 2 damage
4. Ray Fillet, Wave Warrior — puts a counter on itself
5. The Neutrinos — gets +1/+0
6. Aetherstorm Roc — puts a counter on a permanent you control
7. Raphael, Most Attitude — exiles a card from your library

373 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 (Manglehorn is one).

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

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