Birgi, God of Storytelling // Harnfel, Horn of Bounty

cast a spell — 32 cards in Birgi's colors can cause this.

1. Buster Sword — When a spell is cast thanks to Buster Sword, Birgi, God of Storytelling // Harnfel, Horn of Bounty adds 1 mana
2. Goliath Daydreamer — When Goliath Daydreamer is cast, Birgi, God of Storytelling // Harnfel, Horn of Bounty adds 1 mana
3. Spawnsire of Ulamog — When Spawnsire of Ulamog is cast, Birgi, God of Storytelling // Harnfel, Horn of Bounty adds 1 mana
4. Shell of the Last Kappa — When Shell of the Last Kappa is cast, Birgi, God of Storytelling // Harnfel, Horn of Bounty adds 1 mana
5. Chandra, Flame's Catalyst — When an instant or sorcery is cast thanks to Chandra, Flame's Catalyst, Birgi, God of Storytelling // Harnfel, Horn of Bounty adds 1 mana
6. Mogg Salvage — When Mogg Salvage is cast, Birgi, God of Storytelling // Harnfel, Horn of Bounty adds 1 mana
7. Shaman's Trance — When Shaman's Trance is cast, Birgi, God of Storytelling // Harnfel, Horn of Bounty adds 1 mana
8. Conspicuous Snoop — When a Goblin is cast thanks to Conspicuous Snoop, Birgi, God of Storytelling // Harnfel, Horn of Bounty adds 1 mana
9. Dream Pillager — When Dream Pillager is cast, Birgi, God of Storytelling // Harnfel, Horn of Bounty adds 1 mana
10. Etali, Primal Storm — When Etali, Primal Storm is cast, Birgi, God of Storytelling // Harnfel, Horn of Bounty adds 1 mana

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

a card is discarded — 460 cards in Birgi's colors can cause this (Birgi is one).

When Birgi, God of Storytelling // Harnfel, Horn of Bounty makes a player discard a card:

1. Ivora, Insatiable Heir — puts a +1/+1 counter on itself
2. Cool but Rude — deals 2 damage
3. Containment Construct — brings a card back
4. Magmakin Artillerist — deals that much damage
5. Glint-Horn Buccaneer — deals 1 damage
6. Marauding Mako — puts that many +1/+1 counters on itself
7. Inti, Seneschal of the Sun — exiles a card from your library
8. Pitchstone Wall — sacrifices itself
9. Currency Converter — exiles it
10. Bag of Holding — exiles it

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

an artifact is cast — 2,477 cards in Birgi's colors can cause this (Birgi is one).

When Birgi, God of Storytelling // Harnfel, Horn of Bounty is cast:

1. Ravenous Robots — makes a token
2. Poetic Ingenuity — makes a token
3. Patchwork Automaton — puts a +1/+1 counter on itself
4. Golem Foundry — puts a charge counter on itself
5. Embersmith — deals 1 damage
6. Golem's Heart — gains you 1 life
7. Urza's Chalice — gains you 1 life
8. Solar Array — grants sunburst
9. Traxos, Scourge Eternal — untaps itself
10. Drooling Ogre — gives an opponent control of itself

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

a nontoken artifact enters the battlefield — 2,484 cards in Birgi's colors can cause this (Birgi is one).

When Birgi, God of Storytelling // Harnfel, Horn of Bounty enters:

1. Ultron, Artificial Malevolence — makes a token
2. Surge Conductor — proliferates
3. Weapons Manufacturing — makes a token
4. Mirrorworks — makes a token

an artifact enters the battlefield — 2,684 cards in Birgi's colors can cause this (Birgi is one).

When Birgi, God of Storytelling // Harnfel, Horn of Bounty enters:

1. Hedron Detonator — deals 1 damage
2. Machinesmith Automaton — puts a +1/+1 counter on itself
3. Oreplate Pangolin — puts a +1/+1 counter on itself
4. Arcbound Crusher — puts a +1/+1 counter on itself
5. Towashi Songshaper — gets +1/+0
6. Battered Golem — untaps itself
7. Dragonspark Reactor — puts a charge counter on itself
8. Grinding Station — untaps itself
9. Reckless Fireweaver — deals 1 damage
10. Quicksmith Genius — draws and discards

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

a card in a graveyard — 1,770 cards in Birgi's colors can cause this (Birgi is one).

Birgi, God of Storytelling // Harnfel, Horn of Bounty:

1. Vessel of Endless Rest — puts cards into the graveyard that Vessel of Endless Rest can bring back
2. Harness the Storm — puts cards into the graveyard that Harness the Storm can bring back
3. Heart-Shaped Herb — puts cards into the graveyard that Heart-Shaped Herb can bring back
4. Barkform Harvester — puts cards into the graveyard that Barkform Harvester can bring back
5. Cybernetic Specialist — puts cards into the graveyard that Cybernetic Specialist can bring back
6. Reito Sentinel — puts cards into the graveyard that Reito Sentinel can bring back
7. Chrome Companion — puts cards into the graveyard that Chrome Companion can bring back
8. Capricious Hellraiser — fills your graveyard toward the 9 or more cards Capricious Hellraiser needs
9. Yidaro, Wandering Monster — puts cards into the graveyard that Yidaro, Wandering Monster can bring back
10. Tersa Lightshatter — puts cards into the graveyard that Tersa Lightshatter can bring back

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

a creature attacks — 3,451 cards in Birgi's colors can cause this (Birgi is one).

When Birgi, God of Storytelling // Harnfel, Horn of Bounty attacks:

1. Adaptive Omnitool — searches a library
2. Saw — sacrifices a creature
3. Ultima Weapon — kills a creature an opponent controls
4. Total War — kills a creature
5. The Spear of Leonidas — triggers

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

a creature blocks — 3,451 cards in Birgi's colors can cause this (Birgi is one).

When Birgi, God of Storytelling // Harnfel, Horn of Bounty blocks:

1. Tide of War — sacrifices a creature
2. Dead-Iron Sledge — kills a creature

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

anything attacks — 3,451 cards in Birgi's colors can cause this (Birgi is one).

When Birgi, God of Storytelling // Harnfel, Horn of Bounty attacks:

1. ED-E, Lonesome Eyebot — puts a quest counter on itself
2. Misty Mountains Raider — puts 2 counters on a Goblin or Army
3. Razorkin Hordecaller — makes a token
4. Gut, True Soul Zealot — sacrifices a creature or artifact
5. Swashbuckler Extraordinaire — sacrifices a Treasure

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

a creature enters the battlefield — 3,801 cards in Birgi's colors can cause this (Birgi is one).

When Birgi, God of Storytelling // Harnfel, Horn of Bounty enters:

1. Slash, Reptile Rampager — deals 2 damage
2. Gimli of the Glittering Caves — puts counters on a permanent
3. Wingnut, Bat on the Belfry — grants flying, haste and menace
4. Raphael, Most Attitude — exiles a card from your library

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