Arbor Colossus

a creature gets a counter — 2,691 cards in the game can cause this (Arbor Colossus is one).

When Arbor Colossus gets a counter:

1. Hollowmurk Siege — draws you 1 card
2. Ant-Man, Colony Commander — makes a token
3. Earth Kingdom General — gains you that much life
4. Casey Jones, Back Alley Brute — deals that much damage
5. Generous Patron — draws you 1 card
6. Shalai and Hallar — deals that much damage
7. Danny Pink — draws you 1 card
8. Enduring Scalelord — puts a +1/+1 counter on itself
9. Bold Plagiarist — puts counters on a permanent
10. Mikey & Leo, Chaos & Order — draws you 1 card

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

a creature in a graveyard — 2,769 cards in the game can cause this (Arbor Colossus is one).

Arbor Colossus puts cards into the graveyard that:

1. Chainer, Dementia Master — can bring back
2. The Deck of Many Things — can bring back
3. Afterlife from the Loam — can bring back
4. Crypt Champion — can bring back
5. Victor, Valgavoth's Seneschal — can bring back
6. Push // Pull — can bring back
7. Vivien on the Hunt — can bring back
8. Virtus's Maneuver — can bring back
9. Dredger's Insight — can bring back
10. Bramble Familiar // Fetch Quest — can bring back

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

a nontoken creature dies — 2,769 cards in the game can cause this (Arbor Colossus is one).

When a creature dies thanks to Arbor Colossus:

1. Vraska, the Silencer — brings a card back
2. High-Society Hunter — draws you 1 card
3. Overseer of the Damned — makes a token
4. Shelob, Dread Weaver — hits a graveyard
5. Ghoulish Procession — makes a token
6. Ogre Slumlord — makes a token
7. Minotaur, Roxxon CEO — makes a token
8. Harvester of Souls — draws you 1 card
9. Magus of the Bridge — exiles itself
10. Koh, the Face Stealer — exiles it

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

a creature dies — 2,830 cards in the game can cause this (Arbor Colossus is one).

When a creature dies thanks to Arbor Colossus:

1. Journey to Eternity // Atzal, Cave of Eternity — brings a card back
2. Avatar Destiny — mills a card
3. Blood Spatter Analysis — mills a card

459 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 (Arbor Colossus is one).

When Arbor Colossus attacks:

1. Shaun, Father of Synths — makes a token
2. Surgical Suite // Hospital Room — puts a counter on a creature
3. Banon, the Returners' Leader — draws and discards

147 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 (Arbor Colossus is one).

1. Chorale of the Void — When Arbor Colossus attacks, Chorale of the Void brings a card back

219 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 (Arbor Colossus is one).

When Arbor Colossus enters:

1. Scurry Oak — puts a counter on itself
2. Fathom Mage — puts a counter on itself
3. Liliana the Repentant — mills a card
4. Paleoloth — brings a card back

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