Six

a Treefolk attacks — 165 cards in the game can cause this (Six is one).

1. Fangorn, Tree Shepherd — When Six attacks, Fangorn, Tree Shepherd adds that much mana

a Treefolk creature enters the battlefield — 172 cards in the game can cause this (Six is one).

1. Orchard Warden — When Six enters, Orchard Warden gains you that creature's toughness life

a Treefolk enters the battlefield — 174 cards in the game can cause this (Six is one).

1. Quickbeam, Upstart Ent — When Six enters, Quickbeam, Upstart Ent gives +2/+2

anything leaves a graveyard — 2,503 cards in the game can cause this (Six is one).

When a land leaves a graveyard thanks to Six:

1. Blastoneuron — makes each opponent lose 1 life
2. Defiled Crypt // Cadaver Lab — makes a token
3. Teval, the Balanced Scale — makes a token
4. Hologram Stalker — makes a token
5. Tormod, the Desecrator — makes a token
6. Quintorius, Field Historian — makes a token
7. Garrison Excavator — makes a token
8. Amzu, Swarm's Hunger — makes a token
9. Kirol, History Buff // Pack a Punch — becomes prepared
10. Teval's Judgment — triggers

13 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 (Six is one).

1. Samwise Gamgee — Six puts cards into the graveyard that Samwise Gamgee can bring back
2. Bloodbond March — Six puts cards into the graveyard that Bloodbond March can bring back
3. Thor, God of Thunder — Six puts cards into the graveyard that Thor, God of Thunder can bring back
4. Gale, Waterdeep Prodigy — Six puts cards into the graveyard that Gale, Waterdeep Prodigy can bring back
5. Harness the Storm — Six puts cards into the graveyard that Harness the Storm can bring back
6. Transplant Theorist — Six puts cards into the graveyard that Transplant Theorist can bring back
7. Heart-Shaped Herb — Six puts cards into the graveyard that Heart-Shaped Herb can bring back
8. Wayward Angel — Six fills your graveyard toward the 7 or more cards Wayward Angel needs
9. Rescue from the Underworld — Six puts cards into the graveyard that Rescue from the Underworld can bring back
10. Victimize — Six puts cards into the graveyard that Victimize can bring back

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 (Six is one).

When a card hits the graveyard thanks to Six:

1. Quest for Ancient Secrets — puts a quest counter on itself
2. Planar Void — hits a graveyard
3. Measure of Wickedness — gives an opponent control of itself
4. Energy Field — sacrifices itself

7 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 (Six is one).

1. Far Fortune, End Boss — When Six attacks, Far Fortune, End Boss deals 1 damage
2. Temmet, Naktamun's Will — When Six attacks, Temmet, Naktamun's Will draws you 1 card
3. Grim Javelineer — When Six attacks, Grim Javelineer gives +1/+0
4. Invisible Woman — When Six attacks, Invisible Woman triggers
5. Caesar, Legion's Emperor — When Six attacks, Caesar, Legion's Emperor sacrifices a creature
6. Guide of Souls — When Six attacks, Guide of Souls triggers
7. Campsite Cuisine — When Six attacks, Campsite Cuisine sacrifices a Food
8. Gossip's Talent — When Six attacks, Gossip's Talent triggers
9. Banon, the Returners' Leader — When Six attacks, Banon, the Returners' Leader draws and discards
10. Toph, Earthbending Master — When Six attacks, Toph, Earthbending Master puts a counter on a permanent

117 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 (Six is one).

1. Adaptive Omnitool — When Six attacks, Adaptive Omnitool searches a library
2. Anthem of Rakdos — When Six attacks, Anthem of Rakdos gives +2/+0
3. Kindred Discovery — When Six attacks, Kindred Discovery draws you 1 card
4. Invasion of New Capenna // Holy Frazzle-Cannon — When Six attacks, Invasion of New Capenna // Holy Frazzle-Cannon puts counters on a permanent
5. Chorale of the Void — When Six attacks, Chorale of the Void brings a card back
6. Anim Pakal, Thousandth Moon — When Six attacks, Anim Pakal, Thousandth Moon puts a +1/+1 counter on itself
7. Saw — When Six attacks, Saw sacrifices a creature
8. Gisa's Favorite Shovel — When Six attacks, Gisa's Favorite Shovel makes an opponent sacrifice a creature
9. Ultima Weapon — When Six attacks, Ultima Weapon kills a creature an opponent controls
10. Total War — When Six attacks, Total War kills a creature

188 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 (Six is one).

1. Mage Hunters' Onslaught — When Six blocks, Mage Hunters' Onslaught makes a player lose 1 life
2. Tide of War — When Six blocks, Tide of War sacrifices a creature
3. Dead-Iron Sledge — When Six blocks, Dead-Iron Sledge kills a creature
4. Dwindle — When Six blocks, Dwindle kills a creature

26 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 (Six is one).

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

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 (Six is one).

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

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