Gran-Gran

an Ally enters the battlefield — 43 cards in Gran-Gran's colors can cause this (Gran-Gran is one).

When Gran-Gran enters:

1. Halimar Excavator — mills a card
2. Umara Raptor — puts a +1/+1 counter on itself
3. Seascape Aerialist — grants flying

tap a permanent — 327 cards in Gran-Gran's colors can cause this.

When Gran-Gran becomes tapped thanks to:

1. Nyssa of Traken — it draws you 1 card
2. Summon: Valefor — it draws you 1 card
3. Gallows at Willow Hill — it draws you 1 card
4. Chandra, Chill of Compliance — it draws you 1 card
5. Teardrop Kami — it draws you 1 card
6. Wave Elemental — it draws you 1 card
7. Drowner of Hope — it draws you 1 card
8. Seasoned Cryomancer — it draws you 1 card
9. Divining Duelist — it draws you 1 card
10. Three Bowls of Porridge — it draws you 1 card

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

a card is discarded — 493 cards in Gran-Gran's colors can cause this (Gran-Gran is one).

When Gran-Gran makes a player discard a card:

1. Containment Construct — brings a card back
2. Scrounging Skyray — puts that many +1/+1 counters on itself
3. Curator of Mysteries — scries
4. All-Seeing Arbiter — shrinks a creature
5. Drake Haven — makes a token
6. Hekma Sentinels — gets +1/+1
7. Cunning Survivor — gets +1/+0
8. Zenith Seeker — grants flying
9. Currency Converter — exiles it
10. Bag of Holding — exiles it

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

a card is drawn — 1,454 cards in Gran-Gran's colors can cause this (Gran-Gran is one).

When Gran-Gran makes a player draw a card:

1. Aether Syphon — mills a card
2. Diviner's Wand — gets +1/+1
3. Ominous Seas — puts a foreshadow counter on itself
4. Iron Man, Armored Avenger — puts a counter on a creature
5. Psychosis Crawler — makes each opponent lose 1 life
6. Lyla, Holographic Assistant — puts a counter on a creature
7. Data, New Life — puts a +1/+1 counter on itself
8. Chasm Skulker — puts a +1/+1 counter on itself
9. Nadir Kraken — puts a +1/+1 counter on itself
10. Teferi, Temporal Pilgrim — puts a loyalty counter on itself

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

a Human enters the battlefield — 634 cards in Gran-Gran's colors can cause this (Gran-Gran is one).

1. Captain of the Mists — When Gran-Gran enters, Captain of the Mists untaps itself

a card in a graveyard — 1,684 cards in Gran-Gran's colors can cause this.

1. Gale, Waterdeep Prodigy — Gran-Gran puts cards into the graveyard that Gale, Waterdeep Prodigy can bring back
2. Transplant Theorist — Gran-Gran puts cards into the graveyard that Transplant Theorist can bring back
3. Heart-Shaped Herb — Gran-Gran puts cards into the graveyard that Heart-Shaped Herb can bring back
4. Mindwhisker — Gran-Gran fills your graveyard toward the 7 or more cards Mindwhisker needs
5. Barkform Harvester — Gran-Gran puts cards into the graveyard that Barkform Harvester can bring back
6. Cybernetic Specialist — Gran-Gran puts cards into the graveyard that Cybernetic Specialist can bring back
7. Picklock Prankster // Free the Fae — Gran-Gran puts cards into the graveyard that Picklock Prankster // Free the Fae can bring back
8. Reito Sentinel — Gran-Gran puts cards into the graveyard that Reito Sentinel can bring back
9. Most Decrepit Old Bird // Speak Secrets — Gran-Gran fills your graveyard toward the 7 or more cards Most Decrepit Old Bird // Speak Secrets needs
10. Sage's Row Denizen — Sage's Row Denizen fills your graveyard toward the 3 or more cards Gran-Gran needs
11. Master Pakku — Master Pakku fills your graveyard toward the 3 or more cards Gran-Gran needs
12. Cruel Witness — Cruel Witness fills your graveyard toward the 3 or more cards Gran-Gran needs
13. Lightshell Duo — Lightshell Duo fills your graveyard toward the 3 or more cards Gran-Gran needs
14. Exhibition Tidecaller — Exhibition Tidecaller fills your graveyard toward the 3 or more cards Gran-Gran needs
15. Cephalid Inkmage — Cephalid Inkmage fills your graveyard toward the 3 or more cards Gran-Gran needs
16. Sage of Mysteries — Sage of Mysteries fills your graveyard toward the 3 or more cards Gran-Gran needs
17. Scrabbling Skullcrab — Scrabbling Skullcrab fills your graveyard toward the 3 or more cards Gran-Gran needs
18. Selhoff Occultist — Selhoff Occultist fills your graveyard toward the 3 or more cards Gran-Gran needs
19. Fallaji Archaeologist — Fallaji Archaeologist fills your graveyard toward the 3 or more cards Gran-Gran needs
20. Vantress Gargoyle — Gran-Gran fills a graveyard toward the 7 or more cards Vantress Gargoyle needs

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

anything goes to a graveyard — 1,684 cards in Gran-Gran's colors can cause this (Gran-Gran is one).

When a card hits the graveyard thanks to Gran-Gran:

1. Quest for Ancient Secrets — puts a quest counter on itself
2. Energy Field — sacrifices itself

a creature attacks — 3,238 cards in Gran-Gran's colors can cause this (Gran-Gran is one).

When Gran-Gran attacks:

1. Adaptive Omnitool — searches a library
2. Kindred Discovery — draws you 1 card
3. Screaming Swarm — mills a card
4. Imperious Mindbreaker — mills a card
5. Staff of Titania — makes a token
6. Inquisitorial Rosette — makes a token
7. Andúril, Flame of the West — makes 2 tokens
8. Saw — sacrifices a creature
9. Ultima Weapon — kills a creature an opponent controls
10. Throwing Knife — sacrifices itself

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

anything attacks — 3,238 cards in Gran-Gran's colors can cause this (Gran-Gran is one).

When Gran-Gran attacks:

1. ED-E, Lonesome Eyebot — puts a quest counter on itself
2. Madame Web, Clairvoyant — mills a card
3. Dawnsire, Sunstar Dreadnought — deals 100 damage
4. Curse of Verbosity — draws you 1 card
5. Gossip's Talent — triggers
6. Alora, Merry Thief — triggers
7. Twins of Discord — triggers
8. Great Gilded Boat — draws and discards
9. Cosmic Cube — triggers
10. Doom's Time Platform — exiles a card from your graveyard

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

a creature blocks — 3,238 cards in Gran-Gran's colors can cause this (Gran-Gran is one).

When Gran-Gran blocks:

1. Barrow-Blade — strips abilities
2. Dead-Iron Sledge — kills a creature
3. Dwindle — kills a creature

1 other card cares about it too. These are the ones with the most connections.

a creature enters the battlefield — 3,581 cards in Gran-Gran's colors can cause this (Gran-Gran is one).

1. Ray Fillet, Wave Warrior — When Gran-Gran enters, Ray Fillet, Wave Warrior puts a counter on itself

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